ARIZONA PUBLIC SERVICE CO
8-K, 1996-11-22
ELECTRIC & OTHER SERVICES COMBINED
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K
                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported): November 19, 1996


                         ARIZONA PUBLIC SERVICE COMPANY
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


            Arizona                     1-4473                  86-0011170
- --------------------------------------------------------------------------------
(State or other jurisdiction         (Commission              (IRS Employer
      of incorporation)              File Number)         Identification Number)


    400 North Fifth Street, P.O. Box 53999, Phoenix, Arizona            85004
    --------------------------------------------------------            -----
            (Address of principal executive offices)                  (Zip code)



                                 (602) 250-1000
              ----------------------------------------------------
              (Registrant's telephone number, including area code)




                                      NONE
          -------------------------------------------------------------
          (Former name or former address, if changed since last report)
<PAGE>
Item 7.           Financial  Statement,  Pro  Forma  Financial  Information  and
                  Exhibits

                  (c)      Exhibits.

                  The  Registrant  hereby  files the  following  Exhibit  to its
Registration  Statements  on Form S-3 (Nos.  33-61228,  33-55473,  33-64455  and
333-15379)  which were  declared  effective on April 26, 1993,  October 3, 1994,
December 22, 1995 and November 14, 1996, respectively.

Exhibit
No.               Description
- -------           -----------

1.3               Distribution Agreement and related Terms Agreement, each dated
                  November  19,  1996,  in  connection   with  the  offering  of
                  $100,000,000 of 6-3/4% Senior Notes Due 2006.

4.1               Fifty-fourth  Supplemental  Indenture dated as of November 15,
                  1996,   relating  to  the  issuance  of  $100,000,000  of  the
                  Company's First Mortgage Bonds, Senior Note Series A.

4.2               Specimen of Bond of First Mortgage  Bonds,  Senior Note Series
                  A.

4.5               Indenture  dated as of November 15, 1996 among the Company and
                  The Bank of New York, as Trustee.

4.6               First  Supplemental  Indenture  dated as of November  15, 1996
                  relating to the  issuance  of  $100,000,000  of 6-3/4%  Senior
                  Notes Due 2006.

4.7               Specimen of Note of 6-3/4% Senior Notes Due 2006.
<PAGE>
                                   SIGNATURES
                                   ----------



         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Company  has duly  caused  this  report to be  signed on its  behalf by the
undersigned hereunto duly authorized.



                                            ARIZONA PUBLIC SERVICE COMPANY
                                                     (Registrant)




Dated:   November 21, 1996                  By:  Nancy E. Newquist
                                                 -------------------------------
                                                 Nancy E. Newquist
                                                 Treasurer
                                       2

                                  Exhibit 1.3

                                  $175,000,000

                         ARIZONA PUBLIC SERVICE COMPANY

                                Medium-Term Notes
                                -----------------



                             DISTRIBUTION AGREEMENT
                             ----------------------
                               (For Senior Notes)


                                                               November 19, 1996








Ladies and Gentlemen:

                  1.  Introduction.  Arizona Public Service Company,  an Arizona
corporation   (the   "Company"),   confirms  its  agreement  with  each  of  you
(individually,  a  "Distributor"  and  collectively,  the  "Distributors")  with
respect  to the  issue  and  sale  from  time  to  time  by the  Company  of its
medium-term  notes registered under the registration  statements  referred to in
Section  2(a)  and  described  in  the  combined  prospectus  relating  to  such
registration  statements  as "Senior  Notes" (any such  medium-term  notes being
hereinafter  referred to as the  "Securities,"  which  expression  shall, if the
context so admits,  include any permanent  global  Security).  Securities may be
offered and sold pursuant to Section 3 of this Agreement in an aggregate  amount
not to exceed the amount of  Registered  Securities  (as defined in Section 2(a)
hereof)  registered  pursuant  to such  registration  statements  reduced by the
aggregate amount of any other Registered Securities sold otherwise than pursuant
to  Section  3 of this  Agreement.  The  Securities  will  be  issued  under  an
Indenture,  dated as of November 15, 1996 (the "Basic  Indenture"),  between the
Company and The Bank of New York, as trustee (the "Trustee"), as the same may be
amended  by one or  more  additional  Supplemental  Indentures  relating  to the
Securities (each a "Supplemental Indenture," and collectively, the "Supplemental
Indentures")  (the  Basic  Indenture,   as  amended  and  supplemented  by  such
Supplemental Indentures, is hereinafter referred to as the "Indenture"). Subject
to Article 14 of the Basic  Indenture,  prior to the Release Date (as defined in
the Basic  Indenture),  the  Securities  will be secured by the Company's  first
mortgage  bonds (the  "Senior  Note  Mortgage  Bonds")  issued  pursuant  to the
Mortgage and Deed of Trust dated as of July 1, 1946, to The Bank of New York, as
successor  Trustee,  as  amended  and  supplemented  by  fifty-three  
<PAGE>
indentures  supplemental thereto (the "Basic Mortgage"),  and as further amended
and  supplemented by one or more  additional  supplemental  indentures  relating
thereto  (each  a  "Mortgage  Supplemental  Indenture"  and  collectively,   the
"Mortgage   Supplemental   Indentures")  (the  Basic  Mortgage  as  amended  and
supplemented by such Mortgage Supplemental  Indentures,  is hereinafter referred
to as the "Mortgage").

                  The  Securities   shall  have  the  terms   described  in  the
Prospectus referred to in Section 2(a) as it may be amended or supplemented from
time to time,  including any supplement to the  Prospectus  that sets forth only
the terms of a  particular  issue of the  Securities  (a "Pricing  Supplement").
Securities will be issued, and the terms thereof established,  from time to time
by the Company in accordance  with the Indenture and the  Procedures (as defined
in Section 3(d) hereof).

                  2.  Representations and Warranties of the Company. The Company
represents and warrants to, and agrees with, each Distributor as follows:

                  (a)  A  registration  statement  (No.  33-55473)  relating  to
         $25,000,000  of the  Company's  first  mortgage  bonds (the "Bonds") or
         unsecured  debentures,  notes or other evidences of  indebtedness  (the
         "Unsecured  Securities"),   a  registration  statement  (No.  33-64455)
         relating  to   $25,000,000   of  Bonds  or  Unsecured   Securities,   a
         registration  statement  (No.  33-61228)  relating to  $100,000,000  of
         Bonds,  and  a  registration  statement  (No.  333-15379)  relating  to
         $25,000,000 of Bonds,  Unsecured  Securities,  or Securities (together,
         the "Registered  Securities") (including a combined prospectus relating
         to up to  $175,000,000 of Bonds,  Unsecured  Securities or Securities),
         were  filed  with  the   Securities   and  Exchange   Commission   (the
         "Commission") and have become effective.  Such registration statements,
         as each is amended as of the Closing  Date (as defined in Section  3(e)
         hereof),  are  hereinafter  referred  to  as  the  "First  Registration
         Statement,"   the   "Second   Registration   Statement,"   the   "Third
         Registration  Statement,"  and  the  "Fourth  Registration  Statement,"
         respectively,  and, together with any related Rule 462(b)  registration
         statement   or  amendment   thereto,   are   hereinafter   referred  to
         collectively as the "Registration  Statements," and such prospectus, as
         amended  or as  supplemented  as of the  Closing  Date,  including  all
         material  incorporated by reference therein, is hereinafter referred to
         as the  "Prospectus."  Any  reference in this  Agreement to amending or
         supplementing  the Prospectus  shall be deemed to include the filing of
         materials incorporated by reference in the Prospectus after the Closing
         Date and any reference in this Agreement to any amendment or supplement
         to the  Prospectus  shall be  deemed  to  include  any  such  materials
         incorporated by reference in the Prospectus after the Closing Date.

                  (b) Each part of the Registration  Statements,  when such part
         became   effective,   conformed  in  all   material   respects  to  the
         requirements  of the  Securities  Act of 1933  (the  "Act"),  the Trust
         Indenture Act of 1939 (the "Trust  Indenture  Act"),  and the rules and
         regulations (the "Rules and Regulations") of the Commission and did not
         include any untrue  statement  of a material  fact or omit to state any
         material  fact  required to be stated  therein or necessary to make the
         statements therein not misleading,  and on the Closing Date and at each
         of the 
                                       2
<PAGE>
         times of acceptance and of delivery  referred to in Section 6(a) hereof
         and at each of the times of amendment or  supplementing  referred to in
         Section  6(b) hereof (the  Closing Date and each such time being herein
         sometimes  referred to as a  "Representation  Date"),  the Registration
         Statements and the Prospectus will conform in all material  respects to
         the requirements of the Act, the Trust Indenture Act, and the Rules and
         Regulations,  and at such date none of such  documents will include any
         untrue  statement of a material fact or omit to state any material fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not misleading;  provided, however, that the foregoing does not
         apply to (a) statements in or omissions  from any such documents  based
         upon written  information  furnished to the Company by any  Distributor
         specifically   for  use   therein  or  (b)  that  part  of  the  Fourth
         Registration  Statement  that consists of the Statement of  Eligibility
         and  Qualification  (Form T-1) under the Trust Indenture Act of 1939 of
         The Bank of New York, as Trustee under the Basic Indenture.

                  (c) An order of the Arizona Corporation  Commission shall have
         been  granted  authorizing  (i)  the  execution  and  delivery  of  the
         Supplemental  Indenture relating to any series of Securities issued and
         sold by the Company  hereunder,  (ii) the execution and delivery of the
         Mortgage  Supplemental  Indenture,  pursuant  to which the Senior  Note
         Mortgage Bonds securing such Securities  will be issued,  and (iii) the
         issuance and sale of such Securities on the terms and conditions herein
         and in the Prospectus or in any Terms  Agreement (as defined in Section
         3(b))  relating to such  Securities,  and the approval or consent of no
         other  public body or  authority  is  necessary  to the  execution  and
         delivery  of  such  Supplemental  Indenture  or  Mortgage  Supplemental
         Indenture or the validity of the issuance and sale of such  Securities,
         except as may be required under state securities or blue sky laws.

                  (d) The Company holds such valid  franchises,  certificates of
         convenience and necessity,  licenses, and permits as are necessary with
         respect to the  maintenance  and operation of its property and business
         as now  conducted,  except that (A) the Company from time to time makes
         minor  extensions of its system prior to the time a related  franchise,
         certificate,  license,  or  permit is  procured,  (B) from time to time
         communities already being served by the Company become incorporated and
         considerable  time may  elapse  before a  franchise  is  procured,  (C)
         certain franchises may have expired prior to the renegotiation thereof,
         (D) the  Company may not have  obtained  certain  permits or  variances
         relating to the environmental requirements described in any of its Form
         10-K  Report,  its Form  10-Q  Reports,  and/or  its  Form 8-K  Reports
         incorporated by reference in the Registration  Statements,  (E) certain
         minor defects and exceptions may exist which,  individually  and in the
         aggregate,  are not deemed material,  and (F) the Company does not make
         any  representation  regarding the geographical scope of any franchise,
         certificate,  license,  or  permit  that  is  not  specific  as to  its
         geographical scope.

                  (e) The Company has been duly  incorporated and is an existing
         corporation  in good  standing  under the laws of the State of Arizona,
         with power and authority  (corporate  and other) to own its  properties
         and  conduct its  business  as  described  in the  Prospectus;  and the
         Company is duly  qualified to do business as a foreign  corporation  in
         good  standing in all other  jurisdictions  in which its  ownership  or
         lease  of  property  or the  conduct  of  its  business  requires  such
         qualification.
                                       3
<PAGE>
                  (f) Except for property specifically excepted from the lien of
         the  Mortgage  or  released  therefrom  in  accordance  with the  terms
         thereof,  the  Company  has good and  marketable  title in fee  simple,
         except for items  described in (A),  (B), and (C) below,  to all of the
         real property  purported in the Mortgage to be so held,  good and valid
         leasehold  interests in all properties  purported in the Mortgage to be
         held  under  lease,  and good and valid  title to all other  properties
         described  in the  Mortgage  as  subject  to the  lien  thereof  (which
         property excludes (i) the combined cycle plant referred to in Note 8 of
         Notes to Financial Statements in the Company's Form 10-K Report for the
         fiscal  year ended  December  31,  1995 (the  "1995 Form 10-K  Report")
         incorporated by reference in the  Registration  Statements but includes
         the Company's  leasehold  and related  interests in that plant and (ii)
         certain leased interests in Unit 2 of the Palo Verde Nuclear Generating
         Station  referred to in Note 7 of Notes to Financial  Statements in the
         1995 Form 10-K Report),  except that the  transmission and distribution
         lines of the Company,  other than those located on land owned in fee by
         the Company,  and the property described in Section 15 of Article IV of
         the Forty-first Mortgage Supplemental Indenture, have been installed in
         public streets or alleys and in highways  under  ordinances and permits
         granted by the various governmental bodies having jurisdiction, or have
         been  constructed on leaseholds,  easements or  rights-of-way  granted,
         with minor exceptions, by the apparent owners of record of the land and
         such leases,  easements, or rights-of-way are subject to any defects in
         or encumbrances  on the title of the respective  lessors of such leases
         or grantors of such easements or rights-of-way;  title to the aforesaid
         properties  is  subject  only  to:  (A) the lien of the  Mortgage,  (B)
         Excepted Encumbrances as defined in the Mortgage,  and (C) other liens,
         encumbrances  or  defects,  none  of  which,  individually  or  in  the
         aggregate,  materially interfere with the business or operations of the
         Company (with respect to leasehold interests on the Navajo Reservation,
         this  representation  is intended and shall be  understood to mean only
         that the  Company is the owner of the rights  conferred  upon it by the
         leases from the Navajo Tribe  relating to the sites on which the Navajo
         Plant  and the Four  Corners  Plant  are  located,  and that  while the
         Company  is not  aware of the  assertion  of any claim  contesting  the
         interest of the Navajo Tribe in the lands leased,  the Company does not
         give any  representation  with  respect to the  interest  of the Navajo
         Tribe in the lands leased or with respect to the enforceability of such
         leases against the Navajo Tribe);  the Mortgage,  subject only as above
         set forth in this  clause,  now  constitutes,  and the Mortgage and the
         Mortgage Supplemental Indentures theretofore executed,  subject only as
         above set forth in this  clause,  when the latter  shall have been duly
         recorded  and  filed,  will  constitute,   together  and  as  a  single
         instrument,   a  direct  and  valid  first   mortgage  lien  upon  said
         properties,  which include all of the  properties of the Company (other
         than the  classes  or  items  of  property  expressly  excepted  in the
         Mortgage);  and all  properties  (other  than the  classes  or items of
         property  expressly excepted in the Mortgage or expressly released from
         the  lien  thereof)  acquired  by the  Company  after  the date of this
         opinion in each county in the States of Arizona and New Mexico in which
         the Mortgage and the Mortgage  Supplemental  Indentures shall have been
         duly recorded and filed (and, as to which  properties,  with respect to
         priority  only,  any  necessary  recordation  and/or  filing  has  been
         accomplished,   including   therein  any  necessary   descriptions   of
         after-acquired   real   property   and   real   property   upon   which
         after-acquired  fixtures  are  affixed)  will,  upon such  acquisition,
         become subject to the first mortgage lien thereof, subject, however, to
         Excepted  Encumbrances and to liens, if any, existing or placed thereon
         at the time of the acquisition thereof by the Company and, with respect
         to priority only, to liens,  if any,  existing prior to the time of any
                                       4
<PAGE>
         necessary recordation and/or filing by the Company.

                  3.  Appointment as  Distributors;  Agreement of  Distributors;
         Solicitations.

                  (a) Subject to the terms and  conditions  stated  herein,  the
         Company  hereby  appoints each of the  Distributors  as an agent of the
         Company for the purpose of soliciting  or receiving  offers to purchase
         the  Securities  from the Company by others during any Marketing  Time.
         For purposes of this  Agreement,  "Marketing  Time" shall mean any time
         when no suspension  of  solicitation  of offers to purchase  Securities
         pursuant  to Section  3(b) or  Section  4(b) shall be in effect and any
         time when  either any  Distributor  shall own any  Securities  with the
         intention  of  reselling  them or the Company has  accepted an offer to
         purchase Securities but the related settlement has not occurred.

                  So long as this Agreement  shall remain in effect with respect
         to any  Distributor,  the Company shall not, without the consent of any
         such  Distributor,  solicit or accept  offers to purchase  newly-issued
         Securities  from  the  Company   otherwise  than  through  one  of  the
         Distributors;  provided, however, that, subject to all of the terms and
         conditions of this  Agreement,  the foregoing shall not be construed to
         prevent the Company from selling at any time any Registered  Securities
         in a firm commitment underwriting pursuant to an underwriting agreement
         that does not provide  for a  continuous  offering  of such  Registered
         Securities; and provided,  further, that the Company reserves the right
         from time to time (i) to purchase or sell  Securities  directly from or
         to an  investor,  and (ii) to  accept  a  specific  offer  to  purchase
         newly-issued  Securities  from the Company  solicited by a dealer other
         than the Distributors  (each an "Other Dealer"),  without obtaining the
         prior  consent of any of  Distributors,  provided that any Other Dealer
         shall agree to be bound by and subject to the terms and  conditions  of
         this Agreement  binding on the  Distributors  (including the commission
         schedule set forth on Exhibit B). Each  Distributor  is  authorized  to
         engage the  services of any other broker or dealer in  connection  with
         the  offer  or sale of  Securities  purchased  by such  Distributor  as
         principal  for  resale to  others  and may  reallow  a  portion  of the
         commission,   but  such   Distributor  is  not  authorized  to  appoint
         sub-agents.

                  (b)  On  the  basis  of  the  representations  and  warranties
         contained  herein,  but subject to the terms and conditions  herein set
         forth,  each  Distributor  agrees,  as an agent of the Company,  to use
         reasonable best efforts when requested by the Company to solicit offers
         to purchase the  Securities  upon the terms and conditions set forth in
         the  Prospectus,  as from  time to time  amended  or  supplemented.  No
         Distributor shall have any responsibility for maintaining  records with
         respect  to the  aggregate  principal  amount of  Securities  sold,  or
         otherwise  monitoring the availability of Securities for sale under the
         Registration Statements. In connection therewith, each Distributor will
         use the  Prospectus (as amended or  supplemented  from time to time) in
         the form most recently furnished to such Distributor by the Company and
         will solicit offers to purchase the  Securities in accordance  with the
         Act, the Rules and Regulations,  and the applicable  securities laws or
         regulations  of  any  other  applicable   jurisdiction  in  which  such
         Distributor solicits offers to purchase any Securities.  In placing any
         Securities   pursuant  to  an  offer  accepted  by  the  Company,   the
         Distributor  that  solicited  or received  such offer (the  "Presenting
         Distributor")  may act as agent or 
                                       5
<PAGE>
         purchase such Securities from the Company as principal for resale. Upon
         acceptance by the Company of an offer by the Presenting  Distributor to
         purchase  Securities  as  principal,  the  Presenting  Distributor  may
         complete  a Terms  Agreement  substantially  in the form of  Exhibit  A
         hereto (a "Terms Agreement") and transmit the completed Terms Agreement
         to the  Company  by hand or by  facsimile  or  other  similar  means of
         telecommunication.  Upon  acceptance  by the  Company  of an  offer  to
         purchase Securities,  unless the Company and the Presenting Distributor
         otherwise  agree in  writing,  any such  Terms  Agreement  or any other
         written  confirmation  or  communication  transmitted by the Presenting
         Distributor  to the Company or, in the absence of a Terms  Agreement or
         other  written   confirmation  or  communication  from  the  Presenting
         Distributor,  the  oral  agreement  with  respect  to the  terms of the
         Securities  and  of  their  offer  and  sale  evidenced  by  the  offer
         communicated by the Presenting Distributor and accepted by the Company,
         in each case together  with the  provisions  of this  Agreement,  shall
         constitute  an agreement  between the  Presenting  Distributor  and the
         Company for the sale and  purchase of such  Securities  (whether or not
         any Terms  Agreement or other  written  confirmation  or  communication
         shall have been executed by the Company or the Presenting Distributor).

                  Upon  receipt of notice  from the Company as  contemplated  by
         Section 4(b) hereof, each Distributor shall suspend its solicitation of
         offers to purchase Securities until such time as the Company shall have
         furnished  it with  an  amendment  or  supplement  to the  Registration
         Statements  or the  Prospectus,  as the  case may be,  contemplated  by
         Section  4(b)  and  shall  have  advised  such  Distributor  that  such
         solicitation may be resumed.

                  The Company  reserves the right,  in its sole  discretion,  to
         suspend solicitation of offers to purchase the Securities commencing at
         any time for any  period of time or  permanently.  Upon  receipt  of at
         least  one  Business   Day's  prior   notice  from  the  Company,   the
         Distributors will forthwith suspend  solicitation of offers to purchase
         Securities  from the Company until such time as the Company has advised
         the Distributors that such solicitation may be resumed. For the purpose
         of the foregoing  sentence,  "Business  Day" shall mean any day that is
         not a Saturday or Sunday,  and that in The City of New York or Phoenix,
         Arizona  is not a day  on  which  banking  institutions  generally  are
         authorized or obligated by law or executive order to close.

                  The  Distributors are authorized to solicit offers to purchase
         Securities as described in the Prospectus,  as amended or supplemented,
         and only in a minimum  aggregate  amount of $1,000  (or the  equivalent
         thereof in one or more  currencies  or  currency  units other than U.S.
         dollars).  Each Distributor shall communicate to the Company, orally or
         in writing, each reasonable offer to purchase Securities received by it
         as agent.  The  Company  shall have the sole right to accept  offers to
         purchase the Securities  and may reject any such offer,  in whole or in
         part.  Each  Distributor  shall  have  the  right,  in  its  discretion
         reasonably  exercised,  without  notice to the  Company,  to reject any
         offer to purchase  Securities  received by it, in whole or in part, and
         any such  rejection  shall  not be  deemed a  breach  of its  agreement
         contained herein.
                                       6
<PAGE>
                  In  connection  with the  solicitation  of offers to  purchase
         Securities,  the  Distributors  are not  authorized  to  provide to any
         person any written  information  relating to the Company other than the
         Prospectus  and the documents  incorporated  by reference  therein.  No
         Security  which  the  Company  has  agreed  to  sell  pursuant  to this
         Agreement  shall be deemed to have been purchased and paid for, or sold
         by the Company,  until such Security  shall have been  delivered to the
         purchaser thereof against payment by such purchaser.

                  (c)  At  the  time  of  delivery  of,  and  payment  for,  any
         Securities  sold by the Company as a result of a solicitation  made by,
         or offer to purchase  received by, a  Distributor,  acting on an agency
         basis,  the Company  agrees to pay such  Distributor  a  commission  in
         accordance with the schedule set forth in Exhibit B hereto. The Company
         agrees that each Distributor that purchases Securities as principal for
         resale shall  receive such  compensation,  in the form of a discount or
         otherwise,  as shall be  agreed to  between  such  Distributor  and the
         Company  at the time the  Company  accepts  an offer to  purchase  such
         Securities,  or, if no such  compensation is agreed to, a commission in
         accordance with Exhibit B hereto. Unless otherwise specified in a Terms
         Agreement,   a  Distributor   purchasing  Securities  may  resell  such
         Securities to other dealers on the terms set forth in, or determined as
         described in, the Prospectus  (including,  if  applicable,  the Pricing
         Supplement).

                  (d)   Administrative   procedures   respecting   the  sale  of
         Securities (the "Procedures") shall be agreed upon from time to time by
         the Distributors and the Company. The initial Procedures, which are set
         forth in  Exhibit C hereto,  shall  remain in effect  until  changed by
         agreement among the Company and the Distributors.  Each Distributor and
         the Company  agree to perform  the  respective  duties and  obligations
         specifically provided to be performed by each of them herein and in the
         Procedures.  The  Company  will  furnish  to the  Trustee a copy of the
         Procedures as from time to time in effect.

                  (e) The documents required to be delivered by Section 5 hereof
         shall be  delivered  at the  office of the  Company,  400  North  Fifth
         Street,  Phoenix,  Arizona  85004,  not later than 10:00 A.M.,  Arizona
         time,  on the date of this  Agreement  or at such  later time as may be
         mutually agreed by the Company and the Distributors,  which in no event
         shall  be  later  than the  time at  which  the  Distributors  commence
         solicitation of purchases of Securities  hereunder,  such time and date
         being herein called the "Closing Date".

                  4. Covenants of the Company.  In connection with each offering
of Securities, the Company covenants and agrees with the Distributors that:

                  (a) The Company will advise the  Distributors  promptly of any
         proposed   amendment  or  supplementation  of  the  First  Registration
         Statement,  the Second Registration  Statement,  the Third Registration
         Statement, the Fourth Registration Statement or the Prospectus and will
         afford the Distributors a reasonable opportunity to comment on any such
         proposed  amendment or  supplement  (other than any Pricing  Supplement
         that  relates  to  Securities   not   purchased   through  or  by  such
         Distributors).  The Company  will also advise the  
                                       7
<PAGE>
         Distributors  of the  institution  by the  Commission of any stop order
         proceedings in respect of the First Registration Statement,  the Second
         Registration Statement,  the Third Registration  Statement,  the Fourth
         Registration  Statement,  or of any part thereof, and will use its best
         efforts to prevent the issuance of any such stop order and to obtain as
         soon as possible its lifting, if issued.

                  (b)  If,  at  any  time  when  a  prospectus  relating  to the
         Securities is required to be delivered  under the Act, any event occurs
         as a result of which the  Prospectus  as then  amended or  supplemented
         would include an untrue  statement of a material fact, or omit to state
         any material  fact  necessary to make the  statements  therein,  in the
         light of the circumstances  under which they were made, not misleading,
         or if it is  necessary  at any time to amend or  supplement  the  First
         Registration Statement,  the Second Registration  Statement,  the Third
         Registration  Statement,  the  Fourth  Registration  Statement  or  the
         Prospectus  to comply with the Act,  the Company  promptly  will notify
         each  Distributor  to suspend  solicitation  of offers to purchase  the
         Securities  and, if the Company shall decide to amend or supplement the
         Registration Statements or Prospectus, the Company will promptly advise
         each  Distributor  by  telephone  (with  confirmation  in writing)  and
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance; provided, however, that if during the
         period referred to above any Distributor  shall own any Securities that
         it has  purchased  from the Company as principal  with the intention of
         reselling them and the  Distributor  has held such Securities for fewer
         than  90  days  or the  Company  has  accepted  an  offer  to  purchase
         Securities  but the related  settlement  has not occurred,  the Company
         promptly  will  prepare and file with the  Commission  an  amendment or
         supplement that will correct such statement or omission or an amendment
         that will effect such compliance.

                  (c) As soon as  practicable,  but not  later  than 18  months,
         after  the  date of each  acceptance  by the  Company  of an  offer  to
         purchase  Securities   hereunder,   the  Company  will  make  generally
         available to its security  holders an earning  statement or  statements
         (which  need not be  audited)  covering  a period of at least 12 months
         beginning after the effective date of the Fourth Registration Statement
         (as  defined in Rule  158(c)  under the Act),  which will  satisfy  the
         provisions  of Section  11(a) of the Act and the rules and  regulations
         thereunder.

                  (d) The Company will furnish to the  Distributors  such copies
         of the  Registration  Statements  (including  one  copy  of the  Fourth
         Registration  Statement for the  Distributors,  and for the counsel for
         the  Distributors,  which is signed and  includes  all  exhibits),  any
         related   preliminary   prospectus   supplements  and  the  Prospectus,
         including all amendments or supplements  to such  documents,  as may be
         reasonably requested.

                  (e) The Company will arrange or cooperate in arrangements  for
         the  qualification of the Securities for sale and the  determination of
         their  eligibility for investment under the laws of such  jurisdictions
         as the Distributors  designate and will continue such qualifications in
         effect so long as  required  for the  distribution  of the  Securities,
         provided that the Company shall not be required to qualify as a foreign
         corporation in any State, to consent to service of process in any
                                       8
<PAGE>
         State other than with respect to claims  arising out of the offering or
         sale of the Securities,  or to meet other requirements  deemed by it to
         be unduly burdensome.

                  (f) For a period  expiring  on the  earlier  of (i) five years
         after  the  applicable  Representation  Date and (ii) the last  date on
         which any Security sold pursuant to this Agreement is outstanding,  the
         Company  will  furnish to the  Distributors  thereunder  (i) as soon as
         practicable  after the end of each  fiscal  year,  a balance  sheet and
         statements of income and retained earnings of the Company as at the end
         of and for  such  year,  all in  reasonable  detail  and  certified  by
         independent  public  accountants,  and (ii) (A) as soon as  practicable
         after the end of each  quarterly  fiscal  period  (except  for the last
         quarterly  fiscal  period of each  fiscal  year),  a balance  sheet and
         statement  of  income  of the  Company  as at the end of and  for  such
         period, all in reasonable detail and certified by a principal financial
         or accounting officer of the Company, (B) as soon as available,  a copy
         of each report of the Company mailed by the Company to  stockholders or
         filed  with the  Commission,  and (C) from  time to  time,  such  other
         information  concerning the Company as may reasonably be requested.  So
         long as the Company has active subsidiaries,  such financial statements
         will be on a  consolidated  basis to the  extent  the  accounts  of the
         Company and its subsidiaries are consolidated.

                  (g)  The  Company  will  pay  all  expenses  incident  to  the
         performance of its obligations under this Agreement, and will reimburse
         the Distributors for any reasonable expenses (including reasonable fees
         and  disbursements of counsel)  incurred by them in connection with the
         qualification of the Securities for sale and the determination of their
         eligibility for investment under the laws of such  jurisdictions as the
         Distributors  may  designate,  and for any fees  charged by  investment
         rating agencies for the rating of the Securities.

                  (h)  Between  the  date of a Terms  Agreement  and the date of
         delivery of  Securities  with  respect  thereto,  the Company will not,
         without the prior written consent of each Distributor  which is a party
         to such Terms Agreement,  offer or sell, or enter into any agreement to
         sell, any of its debt securities which are substantially similar to the
         Securities other than borrowings  under the Company's  revolving credit
         agreements  and lines of credit,  the private  placement of securities,
         and the issuance of commercial paper.

                  5.  Conditions  of   Obligations.   The  obligations  of  each
Distributor,  as agent  of the  Company,  under  this  Agreement  at any time to
solicit offers to purchase the Securities  and to purchase  Securities  from the
Company as principal is subject to the accuracy,  on the date hereof and on each
Representation  Date,  of the  representations  and  warranties  of the  Company
herein,  to the accuracy,  on each such date, of the statements of the Company's
officers made pursuant to the provisions hereof, to the performance, on or prior
to each such date, by the Company of its obligations  hereunder,  and to each of
the following additional conditions precedent:

                  (a) The  Prospectus,  as  amended  or  supplemented  as of any
         Representation  Date,  shall  have been filed  with the  Commission  in
         accordance with the Rules and Regulations and no stop order  suspending
         the effectiveness of the Registration Statements or of any part thereof
         shall have been issued and no  proceedings  for that purpose shall have
         been instituted or, to the knowledge of the Company or any Distributor,
         shall be contemplated by the Commission.
                                       9
<PAGE>
                  (b) Neither the Registration Statements nor the Prospectus, as
         amended or supplemented as of any  Representation  Date,  shall contain
         any untrue  statement of fact which, in the opinion of any Distributor,
         is  material  or omits to state a fact  which,  in the  opinion  of any
         Distributor,  is material  and is  required to be stated  therein or is
         necessary to make the statements therein not misleading.

                  (c)  There  shall not have  occurred  (i) any  change,  or any
         development   involving  a   prospective   change,   in  or   affecting
         particularly   the  business  or  properties  of  the  Company  or  its
         subsidiaries  which,  in the  judgment of the  Distributors  materially
         impairs the investment quality of the Securities,  (ii) a suspension or
         material limitation in trading in securities  generally on the New York
         Stock  Exchange,  (iii) a  general  moratorium  on  commercial  banking
         activities  in New York  declared  by either  Federal or New York State
         authorities, (iv) a lowering of the rating of any of the Company's debt
         securities or a public  announcement that any such debt securities have
         been   placed  on   CreditWatch,   Watchlist,   or  under  any  similar
         surveillance or review, in each case with negative implications, by any
         recognized  rating agency,  and (v) any outbreak or escalation of major
         hostilities in which the United States is involved,  any declaration of
         war by Congress  or any other  substantial  national  or  international
         calamity  or  emergency  if, in the  judgment of the  Distributors  the
         effect  of any such  outbreak,  escalation,  declaration,  calamity  or
         emergency   makes  it   impractical  or  inadvisable  to  proceed  with
         completion of the sale of and payment for the Securities.

                  (d) With  respect to any  Security  denominated  in a currency
         other  than the U.S.  dollar,  more than one  currency  or a  composite
         currency or any Security the  principal or interest of which is indexed
         to such  currency,  currencies or composite  currency,  there shall not
         have occurred a suspension or material  limitation in foreign  exchange
         trading in such currency,  currencies or composite  currency by a major
         international   bank,  a  general   moratorium  on  commercial  banking
         activities  in  the  country  or  countries   issuing  such   currency,
         currencies  of  composite  currency,  the  outbreak  or  escalation  of
         hostilities involving, the occurrence of any material adverse change in
         the existing  financial,  political or economic  conditions  of, or the
         declaration of war or a national emergency by, the country or countries
         issuing  such  currency,   currencies  or  composite  currency  or  the
         imposition  or  proposal  of  exchange  controls  by  any  governmental
         authority in the country or countries issuing such currency, currencies
         or composite currency;

                  (e)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in such Terms Agreement, the Distributors or the Distributor purchasing
         such Securities  (the  "Purchasing  Distributor"),  as the case may be,
         shall have received an opinion, dated the Closing Date, or such date of
         delivery, as the case may be, of Snell & Wilmer L.L.P., counsel for the
         Company, to the effect that:

                           (i) The  Company  is a  corporation  duly  organized,
                  validly  existing,  and in good standing under the laws of the
                  State of Arizona and has full corporate power and authority to
                  carry on its business as presently conducted;  and the Company
                  is duly qualified as a foreign  corporation to do business and
                                       10
<PAGE>
                  is in good  standing  in the State of New Mexico and the State
                  of California,  the only other  jurisdictions in which it owns
                  or leases  substantial  properties  or in which the conduct of
                  its business requires such qualification;

                           (ii)  The   Indenture   has  been  duly   authorized,
                  executed,  and delivered,  has been duly  qualified  under the
                  Trust  Indenture  Act,  and  constitutes  a valid and  binding
                  instrument  enforceable in accordance with its terms except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Indenture, (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,  remedies,  and other provisions of the Securities
                  and the Indenture may be unenforceable under or limited by the
                  law of the  State of  Arizona;  however,  such law does not in
                  such  counsel's  opinion  substantially  prevent the practical
                  realization of the benefits intended by such documents;

                           (iii) Any  series  of  Securities  established  on or
                  prior  to the  date of such  opinion  in  conformity  with the
                  Indenture, and, when the terms of a particular Security and of
                  its   issuance  and  sale  have  been  duly   authorized   and
                  established  by all necessary  corporate  action in conformity
                  with the Indenture, and such Security has been duly completed,
                  authenticated, and issued in accordance with the Indenture and
                  delivered  against  payment as contemplated by this Agreement,
                  such Security will  constitute a valid and binding  obligation
                  of the  Company  entitled  to  the  benefits  provided  by the
                  Indenture  (except as the same may be  limited by (a)  general
                  principles   of   equity   or   by   bankruptcy,   insolvency,
                  reorganization,  arrangement,  moratorium,  or  other  laws or
                  equitable  principles relating to or affecting the enforcement
                  of  creditors'  rights  generally  or the  enforcement  of the
                  security  provided by the  Indenture,  (b) the  necessity  for
                  compliance with the statutory  procedural rights governing the
                  exercise  of  remedies  by a  secured  creditor,  and  (c) the
                  qualification that certain waivers, procedures,  remedies, and
                  other  provisions  of such  Security and the  Indenture may be
                  unenforceable  under  or  limited  by the law of the  State of
                  Arizona;  however, such law does not in such counsel's opinion
                  substantially   prevent  the  practical   realization  of  the
                  benefits intended by such documents), it being understood that
                  such counsel may (A) assume that at the time of the  issuance,
                  sale and delivery of each Security the  authorization  of such
                  series will not have been modified or rescinded and there will
                  not have  occurred any change in law  affecting  the validity,
                  legally binding  character or enforceability of such Security,
                  (B) assume that neither the issuance, sale and delivery of any
                  Security,   nor  any  of  the  terms  of  such  Security,  nor
                  compliance  by the  Company  with such terms will  violate any
                  applicable  law, any agreement or instrument then binding upon
                  the  Company  or  any  restriction  imposed  by any  
                                       11
<PAGE>
                  court  or  governmental  body  having  jurisdiction  over  the
                  Company  and (C) state  that as of the date of such  opinion a
                  judgement   for  money  in  an  action  based  on   Securities
                  denominated  in  foreign  currencies  or  currency  units in a
                  Federal or State court in the United States  ordinarily  would
                  be  enforced  in the  United  States  only  in  United  States
                  dollars,  and  that  the date  used to  determine  the rate of
                  conversion of the foreign  currency unit in which a particular
                  Security is denominated into United States dollars will depend
                  upon  various  factors,  including  which  court  renders  the
                  judgment;

                           (iv) The Mortgage has been duly authorized, executed,
                  and  delivered,  has  been  duly  qualified  under  the  Trust
                  Indenture Act, and constitutes a valid and binding  instrument
                  enforceable in accordance  with its terms,  except as the same
                  may be  limited  by (a)  general  principles  of  equity or by
                  bankruptcy,    insolvency,    reorganization,     arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Mortgage,  (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures,  remedies, and other provisions of the Senior Note
                  Mortgage Bonds and the Mortgage may be unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  document;

                           (v)  Any  series  of  Senior  Note   Mortgage   Bonds
                  established  on or  prior  to the  date  of  such  opinion  in
                  conformity with the Indenture and the Mortgage,  and, when the
                  terms of a  particular  Senior Note  Mortgage  Bond and of its
                  issuance and sale have been duly authorized and established by
                  all  necessary   corporate   action  in  conformity  with  the
                  Indenture and the Mortgage, and such Senior Note Mortgage Bond
                  has  been  duly  completed,   authenticated,   and  issued  in
                  accordance  with the Mortgage and  delivered to the Trustee as
                  security for  Securities,  such Senior Note Mortgage Bond will
                  constitute  a valid  and  binding  obligation  of the  Company
                  entitled to the benefits  provided by the Mortgage  (except as
                  the same may be limited by (a) general principles of equity or
                  by  bankruptcy,   insolvency,   reorganization,   arrangement,
                  moratorium,  or other laws or equitable principles relating to
                  or affecting the enforcement of creditors' rights generally or
                  the enforcement of the security provided by the Mortgage,  (b)
                  the necessity  for  compliance  with the statutory  procedural
                  rights  governing  the  exercise  of  remedies  by  a  secured
                  creditor,  and (c) the  qualification  that  certain  waivers,
                  procedures, remedies, and other provisions of such Senior Note
                  Mortgage Bond and the Mortgage may be  unenforceable  under or
                  limited by the law of the State of Arizona;  however, such law
                  does not in such counsel's opinion  substantially  prevent the
                  practical   realization  of  the  benefits  intended  by  such
                  documents),  it being  understood  that such  counsel  may (A)
                  assume that at the time of the issuance,  sale and delivery of
                                       12
<PAGE>
                  each  Senior  Note  Mortgage  Bond the  authorization  of such
                  series will not have been modified or rescinded and there will
                  not have  occurred any change in law  affecting  the validity,
                  legally  binding  character or  enforceability  of such Senior
                  Note Mortgage Bond, (B) assume that neither the issuance, sale
                  and delivery of any Senior Note Mortgage  Bond, nor any of the
                  terms of such Senior Note Mortgage Bond, nor compliance by the
                  Company with such terms will violate any  applicable  law, any
                  agreement or  instrument  then binding upon the Company or any
                  restriction  imposed by any court or governmental  body having
                  jurisdiction  over the  Company  and (C) state  that as of the
                  date of such opinion a judgement  for money in an action based
                  on  Senior  Note  Mortgage   Bonds   denominated   in  foreign
                  currencies  or  currency  units in a Federal or State court in
                  the United States  ordinarily  would be enforced in the United
                  States only in United States  dollars,  and that the date used
                  to determine the rate of  conversion  of the foreign  currency
                  unit in  which  a  particular  Senior  Note  Mortgage  Bond is
                  denominated  into  United  States  dollars  will  depend  upon
                  various factors, including which court renders the judgment;

                           (vi) Except for property  specifically  excepted from
                  the lien of the Mortgage or released  therefrom in  accordance
                  with the terms  thereof,  the Company has good and  marketable
                  title in fee simple,  except for items  described in (A), (B),
                  and  (C)  below,  to all of the  real  property  and  fixtures
                  thereon  purported  in the Mortgage to be so held and that are
                  both  located in the State of Arizona and  described  in those
                  title reports  covering at least the Saguaro,  Yucca,  Cholla,
                  Ocotillo,  West  Phoenix,  and Palo Verde plant sites that are
                  listed on an exhibit to such opinion  (the "Title  Documents")
                  (in giving such opinion, such counsel may rely solely upon the
                  Title Documents and may assume the accuracy thereof and of the
                  real  property  descriptions  contained  therein and may state
                  that no other  investigation  or  inquiry  has been  made with
                  respect thereto),  and in giving the opinions  described below
                  with respect to any liens,  defects,  and encumbrances on such
                  title to such personal property,  such counsel may assume that
                  the Company  has good and valid  title to all of the  personal
                  property  located in the State of Arizona and described in the
                  Mortgage as subject to the lien thereof (which  property shall
                  not include fixtures),  and such counsel may rely solely upon,
                  and assume the accuracy of, a search of the Uniform Commercial
                  Code Financing  Statements filed in the records of the Arizona
                  Secretary  of State and may assume  that there are no liens or
                  other  encumbrances  on  personal  property  (as  used  in the
                  Arizona Uniform Commercial Code) of the Company located in the
                  State of Arizona other than liens or other  encumbrances  that
                  have been  perfected  by filing with the Arizona  Secretary of
                  State  under  Arizona  Revised  Statutes   ("A.R.S.")  Section
                  47-9401.A;  such title is subject only to: (A) the lien of the
                  Mortgage,   (B)  Excepted   Encumbrances  as  defined  in  the
                  Mortgage, and (C) other liens, encumbrances,  
                                       13
<PAGE>
                  or defects,  none of which,  individually or in the aggregate,
                  in the opinion of such counsel,  materially interfere with the
                  business or operations of the Company (in determining  whether
                  any such other  liens,  encumbrances,  or  defects  materially
                  interfere with the business or operations of the Company, such
                  counsel may rely solely  upon a  certificate  of an officer or
                  engineer  of the  Company  which  shall  be  attached  to such
                  opinion and such opinion may state that no other investigation
                  or inquiry with respect thereto has been made);  the Mortgage,
                  subject  only  as  above  set  forth  in  this   clause,   now
                  constitutes,  and the Mortgage  and the Mortgage  Supplemental
                  Indentures  theretofore  executed,  subject  only as above set
                  forth in this  clause,  when the  latter  shall have been duly
                  recorded and filed, will constitute,  together and as a single
                  instrument,  a direct and valid first  mortgage lien upon said
                  property;  and all properties (other than the classes or items
                  of property  expressly  excepted in the  Mortgage or expressly
                  released from the lien thereof)  acquired by the Company after
                  the  date of such  opinion  in each  county  in the  State  of
                  Arizona in which the Mortgage  and the  Mortgage  Supplemental
                  Indentures  shall have been duly  recorded and filed and, with
                  respect to priority  only,  any necessary  recordation  and/or
                  filing has been accomplished  (including therein any necessary
                  descriptions of after-acquired real property and real property
                  upon which  after-acquired  fixtures are affixed)  will,  upon
                  such  acquisition,  become  subject to the first mortgage lien
                  thereof,  subject,  however,  to Excepted  Encumbrances and to
                  liens,  if any,  existing or placed thereon at the time of the
                  acquisition  thereof  by the  Company  and,  with  respect  to
                  priority only, to liens, if any, existing prior to the time of
                  any necessary recordation and/or filing by the Company;

                           (vii)  The   Company  is  the  owner  of  the  rights
                  conferred upon it by the leases from the Navajo Tribe relating
                  to the site on which the  Navajo  Plant is  located  and while
                  such  counsel  is not  aware  of the  assertion  of any  claim
                  contesting  the title of the Navajo Tribe to the lands leased,
                  such counsel shall not be required to express any opinion with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe;

                           (viii)  With  certain  exceptions,  a public  service
                  corporation is required to obtain  certificates of convenience
                  and necessity from the Arizona  Corporation  Commission  under
                  A.R.S.  Section 40-281.A for construction of its lines, plant,
                  services,  or systems, or any extensions  thereof,  within the
                  State of Arizona, and to obtain franchises or similar consents
                  or permits from counties and incorporated municipalities under
                  A.R.S. Section 40-283.A for the construction,  operation,  and
                  maintenance of transmission lines within the State of Arizona;
                  to the best of such counsel's knowledge after due inquiry, the
                  Company   holds  such  valid   franchises,   certificates   of
                  convenience and necessity,  consents,  and permits pursuant to
                  such statutory provisions as are necessary with respect to the
                  maintenance  and operation of its property and business as now
                  conducted, except that (A) the Company from time to time makes
                  minor  extensions  of its  system  prior to the time a related
                  franchise,  certificate,  license, or permit is procured,  (B)
                  from  time to time  communities  already  being  served 
                                       14
<PAGE>
                  by the Company become  incorporated and considerable  time may
                  elapse before a franchise is procured,  (C) certain franchises
                  may have  expired  prior  to the  renegotiation  thereof,  (D)
                  certain  minor  defects  and   exceptions   may  exist  which,
                  individually  and in the aggregate,  are not deemed  material,
                  and (E) such  counsel  need not be  required  to  express  any
                  opinion  regarding the  geographical  scope of any  franchise,
                  certificate, license, or permit that is not specific as to its
                  geographical scope;

                           (ix) No consent, approval,  authorization, or consent
                  of any public board or body is required  for the  consummation
                  of  the  transactions  contemplated  hereby  or in  any  Terms
                  Agreement,  including the issuance and sale of Securities  and
                  Senior Note Mortgage Bonds and the execution and delivery of a
                  related  Supplemental   Indenture  and  Mortgage  Supplemental
                  Indenture, except as may be required under state securities or
                  blue sky  laws,  as to which  laws such  counsel  shall not be
                  required  to express  an  opinion,  and such  other  approvals
                  (specified in such opinion) as have been obtained;

                           (x) The  First  Registration  Statement,  the  Second
                  Registration  Statement,  the Third Registration Statement and
                  the Fourth Registration  Statement have become effective under
                  the Act, and, to the best of the knowledge of such counsel, no
                  stop  order   suspending  the   effectiveness   of  the  First
                  Registration Statement, the Second Registration Statement, the
                  Third  Registration   Statement  or  the  Fourth  Registration
                  Statement has been issued and no proceedings  for that purpose
                  have been instituted or are pending or contemplated  under the
                  Act, and each part of the Registration  Statements,  when such
                  part became effective,  and the Prospectus,  as of the Closing
                  Date, and any amendment or supplement thereto, as of its date,
                  complied  as  to  form  in  all  material  respects  with  the
                  requirements  of the Act,  the Trust  Indenture  Act,  and the
                  published Rules and Regulations; such counsel has no reason to
                  believe  that any part of the  Registration  Statements,  when
                  such  part  became  effective,  or the  Prospectus,  as of the
                  Closing Date, or any  amendment or supplement  thereto,  as of
                  its date, contained any untrue statement of a material fact or
                  omitted  to state  any  material  fact  required  to be stated
                  therein  or  necessary  to make  the  statements  therein  not
                  misleading;  the descriptions in the  Registration  Statements
                  and Prospectus of statutes, legal and governmental proceedings
                  and  contracts,  and other  documents  are accurate and fairly
                  present  the  information  required  to be  shown;  and to the
                  actual   knowledge  of  those  persons  in  the  lawyer  group
                  described in such opinion,  there are no legal or governmental
                  proceedings  required to be described in the  Prospectus  that
                  are not described as required,  nor any contracts or documents
                  of a character  required to be described  in the  Registration
                  Statements  or  Prospectus  or to be filed as  exhibits to the
                  Registration  Statements  that are not  described and filed as
                  required (it being  understood  that such counsel need express
                  no opinion as to the financial  statements or other  financial
                  data   contained  in  the   Registration   Statements  or  the
                  Prospectus); and
                                       15
<PAGE>
                           (xi)  This   Agreement  has  been  duly   authorized,
                  executed, and delivered by the Company.

                  In giving such  opinion,  (a) Snell & Wilmer  L.L.P.  may rely
         solely upon  certificates of the Company as to any factual matters upon
         which any such  opinions  are based  and may rely upon the  opinion  of
         Keleher & McLeod,  P.A.,  referred to below, as to all matters governed
         by the laws of the  State of New  Mexico,  but the  opinion  of Snell &
         Wilmer L.L.P.  shall state that, though they are members of the Arizona
         Bar and do not hold  themselves out as experts on the laws of the State
         of New Mexico, they have made a study of the laws of such State insofar
         as such laws are involved in the  conclusions  stated in their opinion,
         and from such study it is their  opinion  that such laws  support  such
         conclusions and that, in their opinion,  the  Distributors and they are
         justified  to such  extent in  relying  upon the  opinion  of Keleher &
         McLeod,  P.A.;  (b)  Snell &  Wilmer  L.L.P.  may  rely on the  opinion
         delivered  pursuant to Section  5(g) as to all matters  governed by the
         laws of the State of New York;  and (c) the lawyer group referred to in
         such opinion  will mean those  lawyers in the offices of Snell & Wilmer
         L.L.P.  who (i) have billed any time on the  particular  transaction to
         which such  opinion  relates or (ii) have billed more than ten hours to
         any Company  matter in the  twelve-month  period  preceding the date on
         which the list of such  lawyers was  compiled  for  purposes of inquiry
         pursuant to such opinion.

                  (f)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received an opinion, dated
         the Closing, or such date of delivery, as the case may be, of Keleher &
         McLeod, P.A., New Mexico counsel for the Company, to the effect that:

                           (i)  The  Company  is  duly  qualified  as a  foreign
                  corporation  to do  business  and is in good  standing  in the
                  State of New Mexico and has full corporate power and authority
                  to  engage  in the State of New  Mexico  in the  business  now
                  conducted by it therein; and

                           (ii) The  activities  of the  Company in the State of
                  New Mexico to date do not constitute it a "public  utility" as
                  that term is defined in the relevant  laws of the State of New
                  Mexico,  and  accordingly,  no public  utility  franchises  or
                  certificates  of convenience and necessity are necessary under
                  New Mexico law with respect to the  maintenance  and operation
                  of the Company's property and business as now conducted in the
                  State of New Mexico and no approval, authorization, or consent
                  of the New  Mexico  Public  Utility  Commission  or any  other
                  public  board or body of the State of New  Mexico is  required
                  for the issuance and sale of the Securities or the Senior Note
                  Mortgage Bonds on the terms and  conditions  herein and in the
                  Prospectus set forth or  contemplated  or for the execution of
                  the Supplemental  Indenture  relating to the Securities or the
                  Mortgage  Supplemental  Indenture  relating to the Senior Note
                  Mortgage  Bonds,  except as may be  required  under New Mexico
                  state  securities  or blue 
                                       16
<PAGE>
                  sky laws,  as to which laws such counsel shall not be required
                  to express an opinion.

                           (iii)  Assuming  that the  Company has good and valid
                  title to all of the personal  property located in the State of
                  New Mexico and  described  in the  Mortgage  as subject to the
                  lien  thereof  (which  property  shall not  include  fixtures)
                  ("Personal Property"),  in giving the opinions described below
                  with respect to any liens,  defects and  encumbrances  on such
                  title to such Personal Property,  such counsel may rely solely
                  upon,  and assume  the  accuracy  of, a search of the  Uniform
                  Commercial Code Financing  Statements  filed in the records of
                  the New Mexico  Secretary  of State and may assume  that there
                  are no liens or other  encumbrances  on personal  property (as
                  used in the New Mexico Uniform Commercial Code) of the Company
                  located in the State of New  Mexico  other than liens or other
                  encumbrances  that have been  perfected by filing with the New
                  Mexico Secretary of State under Section  55-9-401,  New Mexico
                  Statutes  Annotated 1978; such title to such Personal Property
                  is subject only to: (A) the lien of the Mortgage, (B) Excepted
                  Encumbrances as defined in the Mortgage,  and (C) other liens,
                  encumbrances,  or defects,  none of which,  individually or in
                  the  aggregate,  in the  opinion of such  counsel,  materially
                  interfere  with the business or  operations of the Company (in
                  determining  whether any such other  liens,  encumbrances,  or
                  defects  materially  interfere with the business or operations
                  of  the   Company,   such  counsel  may  rely  solely  upon  a
                  certificate  of an officer or engineer  of the  Company  which
                  shall be attached to such  opinion and such  opinion may state
                  that no other  investigation  or inquiry with respect  thereto
                  has been made); the Mortgage,  subject only as above set forth
                  in this  clause,  now  constitutes,  and the  Mortgage and the
                  Mortgage Supplemental Indentures theretofore executed, subject
                  only as above set forth in this clause,  when the latter shall
                  have been duly recorded and filed,  will constitute,  together
                  and as a single instrument,  a direct and valid first mortgage
                  lien upon such Personal  Property;  and all properties  (other
                  than the  classes or items of property  expressly  excepted in
                  the  Mortgage or  expressly  released  from the lien  thereof)
                  acquired by the Company after the date of this opinion in each
                  county in the State of New  Mexico in which the  Mortgage  and
                  the  Mortgage  Supplemental  Indentures  shall  have been duly
                  recorded  and filed and,  with respect to priority  only,  any
                  necessary  recordation  and/or  filing  has been  accomplished
                  (including    therein   any    necessary    descriptions    of
                  after-acquired  real  property  and real  property  upon which
                  after-acquired   fixtures   are  affixed)   will,   upon  such
                  acquisition,   become  subject  to  the  first  mortgage  lien
                  thereof,  subject,  however,  to Excepted  Encumbrances and to
                  liens,  if any,  existing or placed thereon at the time of the
                  acquisition  thereof  by the  Company  and,  with  respect  to
                  priority only, to liens, if any, existing prior to the time of
                  any necessary recordation and/or filing by the Company;
                                       17
<PAGE>
                           (iv) The Company is the owner of the rights conferred
                  upon it by the leases  from the Navajo  Tribe  relating to the
                  site on which the Four Corners plant is located and while such
                  counsel is not aware of the assertion of any claim  contesting
                  the  interest of the Navajo  Tribe in the lands  leased,  such
                  counsel  shall not be required  to express  any  opinion  with
                  respect  to the  interest  of the  Navajo  Tribe in the  lands
                  leased or with  respect to the  enforceability  of such leases
                  against the Navajo Tribe.

         In giving such  opinion,  Keleher & McLeod,  P.A.  may rely solely upon
         certificates  of the Company as to any factual  matters  upon which any
         such opinions are based.

                  (g)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received an opinion, dated
         the Closing  Date,  or such date of delivery,  as the case may be, from
         counsel for the Distributors or the Purchasing Distributor, as the case
         may be, dated the Closing  Date or such date of  delivery,  as the case
         may be, with respect to the incorporation of the Company,  the validity
         of the  Securities,  the Senior Note Mortgage Bonds,  the  Registration
         Statements, the Prospectus, and other related matters as may reasonably
         be required,  and the Company shall have furnished to such counsel such
         documents as they request for the purpose of enabling them to pass upon
         such matters.  In rendering  such opinion,  such counsel may rely as to
         the  incorporation of the Company and all other matters governed by the
         laws of the States of Arizona and New Mexico upon the opinions of Snell
         & Wilmer L.L.P. and Keleher & McLeod, P.A., referred to above.

                  (h)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case may be, shall have received a certificate  of
         the  President  or any Vice  President  and a  principal  financial  or
         accounting officer of the Company,  dated the Closing Date or such date
         of delivery, as the case may be, in which such officers, to the best of
         their knowledge after  reasonable  investigation,  shall state that the
         representations  and  warranties  of the Company in this  Agreement are
         true and correct, that the Company has complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied at or
         prior  to  the  Closing  Date,  that  no  stop  order   suspending  the
         effectiveness  of  the  First   Registration   Statement,   the  Second
         Registration Statement,  the Third Registration Statement or the Fourth
         Registration  Statement  has been  issued and no  proceedings  for that
         purpose have been instituted or are contemplated by the Commission, and
         that, subsequent to the date of the most recent financial statements in
         the  Prospectus,  there  has been no  material  adverse  change  in the
         financial  position  or results of  operations  of the  Company and its
         subsidiaries  except as set forth or  contemplated in the Prospectus or
         as described in such certificate.

                  (i)  At  the  Closing  Date  and,  if  specified  in  a  Terms
         Agreement,  if any, at the time of delivery of the Securities described
         in  such  Terms   Agreement,   the   Distributors   or  the  Purchasing
         Distributor,  as the case  may be,  shall  have  received  a letter  of
         Deloitte & Touche LLP, dated the Closing Date or such date of delivery,
         as the case may be,  confirming  that  they are  independent  certified
         public  accountants  within the  meaning of the Act and the  applicable
                                       18
<PAGE>
         published Rules and Regulations thereunder,  and stating in effect that
         (i) in their  opinion the  financial  statements  and  schedules of the
         Company   audited  by  them  and   incorporated  by  reference  in  the
         Registration Statements comply as to form in all material respects with
         the applicable  accounting  requirements of the Securities Exchange Act
         of 1934 (the  "1934  Act")  and the  published  Rules  and  Regulations
         thereunder  and (ii) on the basis of a reading of the latest  available
         interim financial statements of the Company,  inquiries of officials of
         the Company responsible for financial and accounting matters, and other
         specified procedures,  nothing came to their attention that caused them
         to believe that (A) the unaudited financial statements  incorporated by
         reference,  if any, in the Registration  Statements do not comply as to
         form  in  all  material   respects  with  the   applicable   accounting
         requirements  of the 1934 Act and the published  Rules and  Regulations
         thereunder or are not stated on a basis  substantially  consistent with
         that of the audited financial  statements  incorporated by reference in
         the  Registration  Statements,  (B) at the  date  of  the  most  recent
         available  unaudited  financial  statements and at a specified date not
         more than five days prior to the date of this Agreement,  there was any
         increase in the amounts of common stock, redeemable preferred stock, or
         non-redeemable   preferred  stock  of  the  Company  or  any  increase,
         exceeding $10,000,000, in long-term debt of the Company or, at the date
         of the most recent available unaudited  financial  statements there was
         any decrease in net assets as compared  with amounts  shown in the most
         recent   financial   statements   incorporated   by  reference  in  the
         Registration  Statements,  or (C) for the twelve-month  period ended at
         the date of the most recent available  unaudited  financial  statements
         there  were  any   decreases,   exceeding  3%,  as  compared  with  the
         twelve-month  period  ended at the date of the  most  recent  financial
         statements incorporated by reference in the Registration Statements, in
         the amounts of total  revenues  or net income,  except in all cases for
         increases or decreases  which result from the declaration or payment of
         dividends, or which the Registration Statements (including any material
         incorporated by reference therein) disclose have occurred or may occur,
         or which are described in such letter.

                  The Company will furnish the Distributors  with such conformed
copies  of  such  opinions,  certificates,  letters,  and  documents  as  may be
reasonably requested.

                  6.  Additional  Covenants of the Company.  The Company  agrees
         that:

                  (a)  Each  acceptance  by the  Company  of an  offer  for  the
         purchase of Securities  shall be deemed to be an  affirmation  that its
         representations and warranties contained in this Agreement are true and
         correct  at the  time of  such  acceptance  and a  covenant  that  such
         representations  and warranties will be true and correct at the time of
         delivery to the purchaser of the Securities as though made at and as of
         each such  time,  it being  understood  that such  representations  and
         warranties  shall  relate  to  the  Registration   Statements  and  the
         Prospectus  as amended  or  supplemented  at each such time.  Each such
         acceptance by the Company of an offer to purchase  Securities  shall be
         deemed  to  constitute  an  additional  representation,   warranty  and
         agreement  by the  Company  that,  as of the date of  delivery  of such
         Securities  to  the  purchaser  thereof,  after  giving  effect  to the
         issuance of such Securities, of any other Securities to be issued on or
         prior to such delivery date and of any other  Registered  Securities to
         be issued and sold by the  Company on or prior to such  delivery  date,
         the  aggregate   amount  of  Registered   Securities   (including   
                                       19
<PAGE>
         any Securities) which have been issued and sold by the Company will not
         exceed the amount of Registered  Securities  registered pursuant to the
         Registration Statements.

                  (b)  Each  time  that  the  Registration   Statements  or  the
         Prospectus  shall be amended or  supplemented  (other than by a Pricing
         Supplement,  an amendment or supplement which relates exclusively to an
         offering of securities  other than the  Securities,  or an amendment or
         supplement  that  occurs  through the filing an  incorporated  document
         (other than a Form 10-K or Form 10-Q) with the Commission), the Company
         shall,  (A)  concurrently  with such amendment or  supplement,  if such
         amendment  or  supplement  shall  occur  at a  Marketing  Time,  or (B)
         immediately  at the next Marketing Time if such amendment or supplement
         shall not occur at a Marketing Time,  furnish the  Distributors  with a
         certificate,  dated the date of delivery  thereof,  of the President or
         any Vice President and a principal  financial or accounting  officer of
         the Company,  in form satisfactory to the  Distributors,  to the effect
         that the statements  contained in the certificate  covering the matters
         set  forth in  Section  5(h)  hereof  which was last  furnished  to the
         Distributors  pursuant to this Section 6(b) are true and correct at the
         time of such amendment or supplement,  as though made at and as of such
         time or, in lieu of such  certificate,  a certificate of the same tenor
         as the certificate referred to in Section 5(h).

                  (c) At each  Representation  Date referred to in Section 6(b),
         the Company shall, (A) concurrently if such  Representation  Date shall
         occur at a Marketing  Time, or (B)  immediately  at the next  Marketing
         Time if such  Representation  Date shall not occur at a Marketing Time,
         furnish the Distributors with a written opinion or opinions,  dated the
         date of such  Representation  Date, of counsel for the Company, in form
         satisfactory to the  Distributors,  to the effect set forth in Sections
         5(e) and 5(f) hereof; provided, however, that to the extent appropriate
         such  opinion or opinions  may  reconfirm  matters set forth in a prior
         opinion  delivered  at the  Closing  Date or under this  Section  6(c);
         provided further, however, that any opinion or opinions furnished under
         this Section 6(c) shall relate to the  Registration  Statements and the
         Prospectus as amended or supplemented at such Representation Date.

                  (d) At each Representation Date referred to in Section 6(b) on
         which the Registration Statements or the Prospectus shall be amended or
         supplemented to include additional financial  information,  the Company
         shall  cause   Deloitte  &  Touche  LLP,  (A)   concurrently   if  such
         Representation Date shall occur at a Marketing Time, or (B) immediately
         at the next Marketing Time if such  Representation Date shall not occur
         at a  Marketing  Time,  to  furnish  the  Distributors  with a  letter,
         addressed  jointly to the  Company and the  Distributors  and dated the
         date of such  Representation  Date,  to the effect set forth in Section
         5(i) hereof;  provided,  however,  that to the extent  appropriate such
         letter may reconfirm  matters set forth in a prior letter  delivered at
         the Closing Date or pursuant to this Section  6(d);  provided  further,
         however, that any letter furnished under this Section 6(d) shall relate
         to the  Registration  Statements  and  the  Prospectus  as  amended  or
         supplemented at such  Representation  Date, with such changes as may be
         necessary  to reflect  changes in the  financial  statements  and other
         information derived from the accounting records of the Company.
                                       20
<PAGE>
                  (e) On  each  date  for  the  delivery  of  Securities  to the
         purchaser  thereof,  the Company shall, if requested by the Distributor
         that solicited or received the offer to purchase any  Securities  being
         delivered on such  settlement  date,  furnish such  Distributor  with a
         written  opinion or opinions,  dated the date of delivery  thereof,  of
         counsel for the Company,  to the effect set forth in Sections  5(e) and
         5(f) hereof;  provided,  however,  that in lieu of each  opinion,  such
         counsel may furnish  the  Distributor  with a letter to the effect that
         the  Distributor  may rely on such prior  opinion to the same extent as
         though it was dated such delivery date (except that  statements in such
         prior opinion shall be deemed to relate to the Registration  Statements
         and  Prospectus as amended or  supplemented  to the time of delivery of
         such letter authorizing reliance).

                  (f) The Company agrees that any obligation of a person who has
         agreed to purchase  Securities,  to make payment for, and take delivery
         of such Securities shall be subject to (i) the accuracy, on the related
         settlement  date fixed  pursuant to the  Procedures,  of the  Company's
         representation  and  warranty  deemed  to be made  to the  Distributors
         pursuant to the last sentence of subsection  (a) of this Section 6, and
         (ii)  the  satisfaction,  on  such  settlement  date,  of  each  of the
         conditions set forth in Sections 5(a), (b) and (c), it being understood
         that  under no  circumstance  shall  any  Distributor  have any duty or
         obligation to exercise the judgment permitted under Section 5(b) or (c)
         on behalf of any such person.

                  7. Indemnification.

                  (a)  The  Company  will   indemnify  and  hold  harmless  each
         Distributor  and each person,  if any, who  controls  such  Distributor
         within the meaning of the Act against  any losses,  claims,  damages or
         liabilities,  joint or  several,  to  which  such  Underwriter  or such
         controlling  person may  become  subject,  under the Act or  otherwise,
         insofar as such losses, claims,  damages, or liabilities (or actions in
         respect thereof) arise out of or are based upon any untrue statement or
         alleged untrue  statement of any material fact contained in any part of
         the Registration Statements relating to the Securities,  when such part
         became effective,  any preliminary prospectus or preliminary prospectus
         supplement,  the Prospectus, or any amendment or supplement thereto, or
         arise out of or are based  upon the  omission  or alleged  omission  to
         state  therein  a  material  fact  required  to be  stated  therein  or
         necessary  to make the  statements  therein  not  misleading;  and will
         reimburse each  Distributor  and each such  controlling  person for any
         legal or other expenses reasonably incurred by such Distributor or such
         controlling  person in connection with  investigating  or defending any
         such loss, claim, damage, liability, or action; provided, however, that
         the Company  will not be liable in any such case to the extent that any
         such loss,  claim,  damage, or liability arises out of or is based upon
         an untrue  statement or alleged untrue statement or omission or alleged
         omission  made  in  any of  such  documents  in  reliance  upon  and in
         conformity  with  written  information  furnished to the Company by any
         Distributor specifically for use therein. This indemnity agreement will
         be in addition to any liability which the Company may otherwise have.
                                       21
<PAGE>
                  (b)  Each  Distributor  will  severally   indemnify  and  hold
         harmless the Company,  each of its directors,  each of its officers who
         have signed the Registration  Statements,  and each person, if any, who
         controls the Company within the meaning of the Act, against any losses,
         claims,  damages,  or  liabilities  to which  the  Company  or any such
         director,  officer, or controlling person may become subject, under the
         Act  or  otherwise,   insofar  as  such  losses,  claims,  damages,  or
         liabilities  (or actions in respect  thereof) arise out of or are based
         upon any untrue  statement or alleged untrue  statement of any material
         fact contained in any part of the Registration  Statements  relating to
         the  Securities,  when  such part  became  effective,  any  preliminary
         prospectus or preliminary prospectus supplement, the Prospectus, or any
         amendment or supplement  thereto, or arise out of or are based upon the
         omission  or the  alleged  omission  to state  therein a material  fact
         required  to be stated  therein  or  necessary  to make the  statements
         therein not  misleading,  in each case to the  extent,  but only to the
         extent,  that such untrue  statement  or alleged  untrue  statement  or
         omission  or  alleged  omission  was  made  in  reliance  upon  and  in
         conformity  with written  information  furnished to the Company by such
         Distributor  specifically for use therein; and will reimburse any legal
         or  other  expenses  reasonably  incurred  by the  Company  or any such
         director,   officer,   or   controlling   person  in  connection   with
         investigating or defending any such loss, claim, damage,  liability, or
         action.  This indemnity  agreement will be in addition to any liability
         which such Distributor may otherwise have.

                  (c) Promptly after receipt by an indemnified  party under this
         Section of notice of the  commencement of any action,  such indemnified
         party  will,  if a claim in respect  thereof is to be made  against the
         indemnifying party under this Section, notify the indemnifying party of
         the   commencement   thereof;   but  the  omission  so  to  notify  the
         indemnifying  party will not relieve it from any liability  that it may
         have to any  indemnified  party  otherwise than under this Section.  In
         case any such action is brought against any indemnified  party,  and it
         notifies  the  indemnifying  party  of the  commencement  thereof,  the
         indemnifying party will be entitled to participate  therein and, to the
         extent  that it may wish,  jointly  with any other  indemnifying  party
         similarly  notified,  to  assume  the  defense  thereof,  with  counsel
         satisfactory  to such  indemnified  party (who shall not,  without  the
         consent  of the  indemnified  party,  be  counsel  to the  indemnifying
         party),   and  after  notice  from  the  indemnifying   party  to  such
         indemnified party of its election so to assume the defense thereof, the
         indemnifying  party will not be liable to such indemnified  party under
         this Section for any legal or other expenses  subsequently  incurred by
         such  indemnified  party in connection  with the defense  thereof other
         than reasonable costs of investigation. An indemnifying party shall not
         be liable for any settlement of a claim or action effected  without its
         written consent, which shall not be unreasonably withheld.

                  (d) If the  indemnification  provided  for in this  Section is
         unavailable or insufficient  to hold harmless an indemnified  party for
         any loss, claim, damage,  liability,  or action described in subsection
         (a) or (b) above, then each indemnifying  party shall contribute to the
         amount  paid or  payable by such  indemnified  party as a result of the
         losses, claims, damages or liabilities referred to in subsection (a) or
         (b) above on the  following  basis:  (1) if such loss,  claim,  damage,
         liability,  or action arises under  subsection  (a) above,  then (i) in
         such  proportion  as is  appropriate  to reflect the relative  benefits
         received by the Company on the one hand and the  Distributor[s]  on the
         other from the  offering of the  Securities  or (ii) if the  allocation
         provided 
                                       22
<PAGE>
         by  clause  (i)  above is not  permitted  by  applicable  law,  in such
         proportion as is appropriate to reflect not only the relative  benefits
         referred  to in clause  (i) above  but also the  relative  fault of the
         Company on the one hand and the Distributors on the other in connection
         with the statements or omissions which resulted in such losses, claims,
         damages  or  liabilities  as  well  as  any  other  relevant  equitable
         considerations;  and (2) if such loss,  claim,  damage,  liability,  or
         action arises under subsection (b) above, then in such proportion as is
         appropriate  to reflect  the  relative  fault of the Company on the one
         hand  and  the  Distributors  on  the  other  in  connection  with  the
         statements or omissions which resulted in such losses,  claims, damages
         or liabilities as well as any other relevant equitable  considerations.
         For the purposes of clause (1) above, the relative benefits received by
         the Company on the one hand and the  Distributors on the other shall be
         deemed to be in the same  proportion as the total net proceeds from the
         offering (before  deducting  expenses)  received by the Company bear to
         the  total  underwriting  discounts  and  commissions  received  by the
         Distributors.  For the  purposes  of  clauses  (1) and (2)  above,  the
         relative fault shall be determined by reference to, among other things,
         whether the untrue or alleged  untrue  statement of a material  fact or
         the  omission or alleged  omission to state a material  fact relates to
         information  supplied  by the  Company  or  the  Distributors  and  the
         parties'  relative  intent,   knowledge,   access  to  information  and
         opportunity  to correct or prevent  such untrue  statement or omission.
         The  amount  paid by an  indemnified  party as a result of the  losses,
         claims,  damages or  liabilities  referred to in the first  sentence of
         this  subsection  (d)  shall be deemed  to  include  any legal or other
         expenses  reasonably  incurred by such indemnified  party in connection
         with  investigating  or  defending  any  action  or claim  which is the
         subject  of  this  subsection  (d).  No  person  guilty  of  fraudulent
         misrepresentation  (within  the  meaning of  Section  11(f) of the Act)
         shall be entitled to contribution from any person who was not guilty of
         such fraudulent  misrepresentation.  The  Distributors'  obligations in
         this  subsection  (d) to contribute  are several in proportion to their
         respective obligations and not joint.

                  8.  Status  of  Each  Distributor.  In  soliciting  offers  to
purchase  the  Securities  from the Company  pursuant to this  Agreement  and in
assuming its other obligations  hereunder (other than any obligation to purchase
Securities   pursuant  to  Section  3  hereof),   each   Distributor  is  acting
individually  and not jointly and is acting  solely as agent for the Company and
not as  principal.  In  connection  with the  placement of any  Securities  by a
Distributor,  acting as agent, (a) each Distributor will make reasonable efforts
to assist the Company in obtaining  performance by each purchaser whose offer to
purchase  Securities from the Company has been solicited by such Distributor and
accepted by the  Company,  but such  Distributor  shall have no liability to the
Company in the event any such purchase is not  consummated  for any reason;  and
(b) if the Company shall default on its  obligations to deliver  Securities to a
purchaser  whose  offer  it  has  accepted,  the  Company  (i)  shall  hold  the
Distributors  harmless  against any loss,  claim or damage  arising from or as a
result of such default by the Company, and (ii) in particular,  shall pay to the
Distributors  any commission to which they would be entitled in connection  with
such sale.

                  9. Survival of Certain  Representations  and Obligations.  The
respective  indemnities,  agreements,  representations,  warranties,  and  other
statements of the Company or its officers and of the  Distributors  set forth in
or made  pursuant  to this  Agreement  will  remain  in full  force  and  effect
regardless of any investigation, or statement as to the results thereof, made by
or on  behalf of the  Distributors  or the  Company  or any of its  officers  or
directors or any controlling  person,  and will 
                                       23
<PAGE>
survive  delivery  of and  payment  for the  Securities.  If this  Agreement  is
terminated  pursuant to Section 10 or for any other  reason or if for any reason
the sale of Securities  described in a confirmation or Terms Agreement  referred
to Section 3 by the Company to a  Distributor  is not  consummated,  the Company
shall  remain  responsible  for the  expenses  to be paid  or  reimbursed  by it
pursuant to Section 4(g) and the  obligations of the Company under Sections 4(c)
and 4(f) and the  respective  obligations  of the Company  and the  Distributors
pursuant  to  Section  7 shall  remain  in  effect.  In  addition,  if any  such
termination  of  this  Agreement  shall  occur  either  (i) at a time  when  any
Distributor  shall own any Securities  that it has purchased from the Company as
principal with the intention of reselling them and the Distributor has held such
Securities  for fewer than 90 days or (ii) after the  Company  has  accepted  an
offer to purchase  Securities but the related  settlement has not occurred,  the
obligations  of the Company  under the proviso in Section 4(b),  under  Sections
4(a),  4(d),  4(e)  and 4(h)  and,  in the case of a  termination  occurring  as
described in (ii) above,  under Sections 3(c), 6(a), 6(e) and 6(f) and under the
last sentence of Section 8, shall also remain in effect.

                  10.  Termination.  This  Agreement may be  terminated  for any
reason at any time by the Company as to any  Distributor  or, in the case of any
Distributor,  by such  Distributor  insofar  as this  Agreement  relates to such
Distributor,  upon the giving of one day's written notice of such termination to
the other parties  hereto;  provided,  however,  that this  Agreement may not be
terminated with respect to a Distributor by the giving of such notice  following
receipt by the  Company of a  confirmation  or Terms  Agreement  referred  to in
Section 3 relating to the purchase of Securities by such  Distributor  and prior
to delivery of the Securities described in such confirmation or Terms Agreement,
unless the sale and purchase of Securities  contemplated  thereby is rejected by
the  Company in  accordance  with  Section  3. Any  settlement  with  respect to
Securities   placed  by  a  Distributor  on  an  agency  basis  occurring  after
termination  of this Agreement  shall be made in accordance  with the Procedures
and each  Distributor  agrees,  if requested  by the Company,  to take the steps
therein  provided  to be taken  by such  Distributor  in  connection  with  such
settlement.

                  11. Sales of Securities  Denominated  in a Currency other than
U.S. Dollars or of Indexed Securities. If at any time the Company and any of the
Distributors  shall  determine  to issue and sell  Securities  denominated  in a
currency  other than U.S.  dollars,  which other currency may include a currency
unit,  or with  respect to which an index is used to  determine  the  amounts of
payments of  principal  and any premium and  interest,  the Company and any such
Distributor  may execute  and deliver a  supplement  to this  Agreement  for the
purpose of making any appropriate additions to and modifications of the terms of
this Agreement (and the Procedures)  applicable to such Securities and the offer
and sale thereof.  The Distributors are authorized to solicit offers to purchase
Securities  with respect to which an index is used to  determine  the amounts of
payments of principal and any premium and interest,  and the Company shall agree
to any sales of such  Securities  (whether  offered  on an  agency or  principal
basis),  only in a minimum aggregate amount of $2,500,000.  The Company will not
issue Securities denominated in Yen otherwise than in compliance with applicable
Japanese  laws,  regulations  and policies.  In  particular,  the Company or its
designated  agent shall  submit such reports or  information  as may be required
from time to time by applicable law,  regulations and guidelines  promulgated by
Japanese  governmental  and regulatory  authorities in the case of the issue and
purchase of the  Securities and the Company shall ensure that each such Security
shall have a minimum  denomination of 
                                       24
<PAGE>
(Y)1,000,000  and  a  minimum  maturity  of  one  year  or  such  other  minimum
denomination  and  maturity  as may be  allowed  from  time to time by  Japanese
governmental and regulatory authorities.

                  12.  Notices.  All  communications  hereunder  relating to any
offering of Securities will be in writing, and, if sent to the Distributors, may
be mailed,  delivered,  or telecopied and confirmed at their addresses furnished
to the Company in writing for the purpose of communications.  All communications
hereunder to the Company shall be mailed to the Company,  Attention:  Treasurer,
at P.O. Box 53999, Phoenix, Arizona 85072-3999,  or delivered, or telecopied and
confirmed to the Company at 400 North Fifth Street, Phoenix, Arizona 85004.

                  13.  Successors.  This  Agreement will inure to the benefit of
and be binding upon the parties hereto and the  Distributors as are named in any
Terms Agreement and their  respective  successors and the officers and directors
and controlling  persons referred to in Section 7 and, to the extent provided in
Section 6(f), any person who has agreed to purchase Securities from the Company,
and no other person will have any right or obligation hereunder.

                  14.  Governing  Laws;  Counterparts.  This Agreement  shall be
governed by and construed in accordance  with the laws of the State of New York.
This  Agreement  and  any  Terms  Agreement  may be  executed  in  one  or  more
counterparts,  each of which  shall be  deemed to be an  original,  but all such
respective counterparts shall together constitute a single instrument.
                                       25
<PAGE>
                  If the foregoing is in accordance with your  understanding  of
our  agreement,  kindly  sign and return to us the  enclosed  duplicate  hereof,
whereupon  it will  become a  binding  agreement  between  the  Company  and the
Underwriters in accordance with its terms.


                                               Very truly yours,

                                               ARIZONA PUBLIC SERVICE COMPANY




                                               By: Nancy E. Newquist
                                                   -----------------------------
                                                   Treasurer


Confirmed and Accepted, as of the 
date first above written:


CS FIRST BOSTON CORPORATION


By:Thomas R. Osborne
   ----------------------------
   Vice President

SALOMON BROTHERS INC


By:Arthur H. Tildesley, Jr.
   ----------------------------
   Director
                                       26
<PAGE>
                                                                       Exhibit A

                         Arizona Public Service Company

                                   ("Company")

                         Medium Term Notes, Series _____

                   Due Nine Months or More from Date of Issue

                                 TERMS AGREEMENT
                                 ---------------


                                                              ___________, 199__


Arizona Public Service Company
400 North 5th Street
Phoenix, AZ   85004
Attention:  Treasurer

Ladies and Gentlemen:

                  We  offer  to  purchase,  on  and  subject  to the  terms  and
conditions of the  Distribution  Agreement  filed as an exhibit to the Company's
registration statement on Form S-3 (No. 333-15379)  ("Distribution  Agreement"),
the following Securities ("Notes") on the following terms:

                  Title:

                  Currency or Currency Units:

                  Stated Maturity:

                  Principal Amount:

                  Public Offering  Price: [___%,  subject  to  change   by   the
                                            undersigned  --    The   Distributor
                                            proposes to reoffer the above  Notes
                                            from  time  to time at market prices
                                            prevailing at the time of  sale,  at
                                            prices  related  to  such prevailing
                                            market  prices  or   at   negotiated
                                            prices.]

                  Original Issue Discount Security:  Yes ____  No ____

                  Denominations:

                  Purchase  Price (to be paid in immediately  available  funds):
                  ___% [, plus accrued interest,  if any, from the Trade Date to
                  the Settlement Date]

                  Underwriting  Discount or Commission received from the Company
                  (%):

                  Proceeds to Company (If different from Public  Offering Price)
                  (%):
<PAGE>
                  In the case of Fixed Rate  Notes,  the  interest  rate and, if
                  different   from  the  dates  set  forth  in  the   Prospectus
                  Supplement,   the   Interest   Payment   Date  or  Dates   and
                  corresponding Regular Record Date or Dates:

                  In the case of Floating Rate Notes, the interest rate formula,
                  Initial  Interest  Rate,  the Index  Maturity,  the  Spread or
                  Spread  Multiplier (if any),  the maximum or minimum  Interest
                  rate  limitations  (if any),  the Interest  Reset  Dates,  the
                  Interest  Determination  Dates,  the  Calculation  Agent,  the
                  Calculation  Dates, the Interest Payment Dates and the Regular
                  Record Dates, in each case to the extent applicable:















                  Optional Redemption (option of the Company):

                           Redemption Date(s):
                           Redemption Prices(s)(%):
                           Notice Period:

                  Optional Redemption (option of the Holder):

                           Redemption Date(s):
                           Redemption Price(s)(%):
                           Notice Period:

                  Sinking Fund:

                  Other Terms:

                  Trade Date:

                  Settlement Date (Issue Date):
                                      -2-
<PAGE>
                        *       *        *        *        *

Details for Settlement
- ----------------------

                  (Additional   Purchase  Information  --  to  be  completed  by
Distributor, if desired, to the extent available):

                           Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner"):

                           Exact address of registered  owner and, if different,
                           the  address  for  delivery of notices and payment of
                           principal and any premium and interest:

                           Taxpayer identification number of registered owner:

                           Principal   amount   of  each   Note  in   authorized
                           denominations to be delivered to registered owner:

                           Exchange rate applicable to purchase Foreign Currency
                           Notes to be paid for in U.S. dollars:

                        *       *        *        *        *

                  Our  agreement to purchase  the Notes  hereunder is subject to
the conditions set forth in the Distribution Agreement, including the conditions
set forth in  paragraphs  (d), (e), (f), (g), (h), and (i) of Section 5 thereof.
If  for  any  reason  the  purchase  by the  undersigned  of  the  Notes  is not
consummated  other than because of a default by the  undersigned or a failure to
satisfy a condition  set forth in clause  (ii),  (iii) or (v) of Section 5(c) of
the Distribution Agreement,  the Company shall reimburse the undersigned for all
out-of-pocket expenses reasonably incurred by the undersigned in connection with
the offering of the Notes and not otherwise  required to be reimbursed  pursuant
to Section 4 of the Distribution Agreement.
                                      -3-
<PAGE>
                  Unless the  undersigned  has  received  notification  from the
Company  within [one  Business Day (as defined in the  Distribution  Agreement)]
that the  Company  does not  agree to the terms set  forth  herein,  this  Terms
Agreement shall constitute an agreement  between the Company and the undersigned
for the sale and  purchase  of the Notes upon the terms set forth  herein and in
the Distribution Agreement.

                                         Very truly yours,

                                         [NAME OF DISTRIBUTOR]



                                         By ____________________________________


Accepted and agreed to 
as of the date set forth above.

ARIZONA PUBLIC SERVICE COMPANY



By _________________________________
<PAGE>
                                                                       EXHIBIT B




                          COMMISSION SCHEDULE TO FOLLOW




<PAGE>
                                                                       EXHIBIT C


                            ADMINISTRATIVE PROCEDURES
                            -------------------------


                  The medium-term notes due nine months or more from their issue
date (the  "Notes"),  are to be offered on a continuing  basis by Arizona Public
Service  Company  (the  "Company").  CS First  Boston  Corporation  and  Salomon
Brothers   Inc   (individually,    a   "Distributor"   and   collectively,   the
"Distributors"), have each agreed to use reasonable efforts to solicit offers to
purchase the Notes. Each Distributor may, but will not be obligated to, purchase
Notes as principal  for its own account.  The Notes are being sold pursuant to a
Distribution Agreement,  dated November 19, 1996 (the "Distribution Agreement"),
between  the  Company and the  Distributors,  and will be issued  pursuant to an
Indenture, dated as of November 15, 1996 (the "Indenture"),  between the Company
and The Bank of New York, as trustee (the  "Trustee").  Subject to Article 14 of
the Indenture,  until the Release Date, the Notes will be secured by one or more
series of the Company's first mortgage bonds issued and delivered by the Company
to the Trustee for the Notes.  On the Release  Date,  the Notes will cease to be
secured by the Company's first mortgage  bonds,  will become  unsecured  general
obligations  of the  Company,  and will rank on a parity  with  other  unsecured
senior indebtedness of the Company.  For a description of the terms of the Notes
and the offering and sale thereof,  see the sections  entitled  "Description  of
Senior Notes", "Special Provisions Relating to Foreign Currency Notes", "Plan of
Distribution  of Senior  Notes"  and  "Glossary"  in the  Prospectus  Supplement
relating to the Notes,  dated  ________,  19__,  attached hereto and hereinafter
referred  to  as  the  "Prospectus   Supplement",   and  the  sections  entitled
"Description  of Senior  Notes"  and "Plan of  Distribution"  in the  Prospectus
relating to the Notes, dated November 18, 1996,  attached hereto and hereinafter
referred  to as the  "Prospectus."  Defined  terms used  herein but not  defined
herein shall have the meanings  assigned to them in the Distribution  Agreement,
the Prospectus or the Prospectus Supplement.

                  The Notes will be represented either by Global Notes delivered
to The  Depository  Trust  Company  ("DTC") or its nominee  and  recorded in the
book-entry system maintained by DTC or such nominee  ("Book-Entry  Notes") or by
certificates  issued in  definitive  form  delivered  to the Holders  thereof or
Persons  designated  by such  Holders  ("Certificated  Notes").  Notes for which
interest is  calculated  on the basis of a fixed  interest  rate are referred to
herein as "Fixed Rate Notes".  Notes for which  interest is calculated at a rate
or rates  determined  by reference  to an interest  rate formula are referred to
herein as "Floating Rate Notes".

                  Notes may be  issued  as  Indexed  Notes,  with the  principal
amount  payable at  Maturity,  the  amount of  interest  payable on an  Interest
Payment Date, or both,  to be  determined by reference to  currencies,  currency
units, commodity prices, financial or non-financial indices or other factors, as
indicated in the  applicable  Pricing  Supplement.  Holders of Indexed Notes may
receive a  principal  amount at Maturity  that is greater  than or less than the
face amount of such Notes  depending upon the fluctuation of the relative value,
rate or price of the specified  index.  Specific  information  pertaining to the
method for  determining the principal  amount payable at Maturity,  a historical
comparison of the relative  value,  rate or price of the specified index and 
<PAGE>
the face amount of the Indexed Note and any additional tax  considerations  will
be described in the applicable Pricing Supplement.

                  Notes  which are issued at a price  lower  than the  principal
amount  thereof and which provide that upon  redemption or  acceleration  of the
Maturity thereof an amount less than the principal  thereof shall become due and
payable are referred to herein as "Original Issue Discount  Notes".  For special
provisions relating to Original Issue Discount Notes and other Notes issued at a
discount for tax purposes,  see the section  entitled "United States Taxation --
Original Issue Discount" in the Prospectus.

                  Unless   otherwise   indicated  in  the   applicable   Pricing
Supplement,  the Notes will be  denominated  in U.S.  dollars  and  payments  of
principal  of and any  premium  and  interest  on the Notes will be made in U.S.
dollars in the manner indicated in the Prospectus and the Prospectus Supplement.
Notes  denominated  in one or more  currencies or currency units other than U.S.
dollars  are  referred  to herein  as  "Foreign  Currency  Notes".  For  special
provisions  relating  to  Foreign  Currency  Notes,  see the  sections  entitled
"Special  Provisions  Relating  to  Foreign  Currency  Notes" in the  Prospectus
Supplement . Specific  information  concerning the foreign  currency or currency
unit in which a  particular  Foreign  Currency  Note is  denominated,  including
historical  exchange  rates and a  description  of the currency and any exchange
controls,  shall  be  contained  in  a  Pricing  Supplement  to  the  Prospectus
Supplement reflecting the terms of such Note.

                  Notes which  provide  that  amounts  payable by the Company in
respect  of  principal  of or any  premium  or  interest  on the Notes  shall be
determined  by  reference to the value,  rate or price of one or more  specified
indices,  are  referred  to  herein as  "Indexed  Notes".  Specific  information
pertaining  to the method for  determining  the  principal  amounts  payable,  a
historical  comparison  of the  value,  rate or  price of the  specified  index,
indices  and the face  amount of the Indexed  Note and  certain  additional  tax
considerations will be described in the applicable Pricing Supplement.

                  Administrative  procedures  and specific terms of the offering
are explained below. Part I indicates  procedures  applicable to all Notes; Part
II indicates specific  procedures for Certificated Notes; and Part III indicates
specific  procedures for Book-Entry  Notes.  Administrative  and  record-keeping
responsibilities will be handled for the Company by its Treasury Department. The
Company  will  advise the  Distributors  in writing  of those  persons  handling
administrative  responsibilities  with whom the  Distributors are to communicate
regarding offers to purchase Notes and the details of their delivery.


PART I:  PROCEDURES APPLICABLE TO ALL NOTES
- -------------------------------------------

Issue Date
- ----------

                  Each Note will be dated the date of its  authentication.  Each
Note will also bear an  original  issue  date (the  "Issue  Date")  which,  with
respect  to any  such  Note (or  portion  thereof),  
                                      C-2
<PAGE>
shall mean the date of its original issuance and shall be specified therein. The
Issue Date will remain the same for all Notes subsequently issued upon transfer,
exchange or substitution of a Note, regardless of their dates of authentication.


Price to Public
- ---------------

                  Except as otherwise  specified in a Pricing  Supplement,  each
Note will be issued at 100% of principal amount.


Maturities; Minimum Purchase;
- -----------------------------

                  Each Note will mature on a date, selected by the purchaser and
agreed to by the  Company,  which  will be at least nine  months  from its Issue
Date.  The  minimum  aggregate  amount  of Notes  which  may be  offered  to any
purchaser will be $100,000.


Interest Payments
- -----------------

                  Interest on each  interest-bearing Note will be calculated and
paid in the manner  described in such Note and in the Prospectus  Supplement and
the applicable Pricing Supplement.  Unless otherwise set forth therein, interest
on Fixed Rate Notes (including  interest for partial periods) will be calculated
on the basis of a 360-day  year of twelve  30-day  months and will not accrue on
the 31st day of any month.  Interest on Floating Rate Notes, except as otherwise
set forth therein,  will be calculated on the basis of actual days elapsed and a
year of 360 days,  except that in the case of a Floating Rate Note for which the
Base Rate is the Treasury Rate,  interest will be calculated on the basis of the
actual number of days in the year.

                  On the fifth Market Day  immediately  preceding  each Interest
Payment  Date,  the Trustee  will  furnish the Company  with the total amount of
interest  payments  (whether  in U.S.  dollars or other  currencies  or currency
units) to be made on such  Interest  Payment  Date.  The  Trustee  will  provide
monthly, to the Company's Treasury  Department,  a list of the principal and any
premium and interest to be paid on Notes maturing in the next succeeding  month.
The Trustee will assume responsibility for withholding taxes on interest paid as
required by law.


Redemption/Repayment
- --------------------

                  If indicated in the applicable Pricing  Supplement,  the Notes
of a particular tenor will be subject to redemption in whole or in part (subject
to applicable minimum denominations),  at the option of the Company on and after
an initial redemption date as set forth in the applicable Pricing Supplement and
in the applicable Note. The redemption price will be set forth in the applicable
Pricing Supplement and in the applicable Note.
                                      C-3
<PAGE>
                  If indicated in the applicable Pricing  Supplement,  the Notes
of a particular  tenor will be subject to repayment at the option of the Holders
thereof in  accordance  with the terms of the Notes on a  repayment  date as set
forth in the  applicable  Pricing  Supplement  and in the  applicable  Note. The
repayment date or dates and repayment  price will be set forth in the applicable
Pricing Supplement and in the applicable Note. The applicable Pricing Supplement
will also indicate whether a Note is subject to an optional extension beyond its
Stated  Maturity  or  whether  the term of all or any  portion  of a Note may be
extended beyond its initial Stated Maturity Date.


Procedures for Establishing the Terms of the Notes
- --------------------------------------------------

                  The Company and the  Distributors  will  discuss  from time to
time the price of and the  rates to be borne by the Notes  that may be sold as a
result of the solicitation of offers by the  Distributors.  Once any Distributor
has  recorded  any  indication  of interest  in Notes upon  certain  terms,  and
communicated  with the  Company,  if the  Company  plans to  accept  an offer to
purchase  Notes upon such terms,  it will  prepare a Pricing  Supplement  to the
Prospectus, as then amended or supplemented,  reflecting the terms of such Notes
and,  after  approval  from the  Distributors,  will arrange to have the Pricing
Supplement filed with, or transmitted by a means reasonably calculated to result
in filing with, the Securities and Exchange Commission (the "Commission")via the
Commission's Edgar System pursuant to Rule 424 under the Securities Act of 1933,
as amended  (the  "Act").*  The  Company  will  supply at least 10 copies of the
Prospectus,   as  then  amended  or  supplemented,   and  bearing  such  Pricing
Supplement,  to  the  Distributor  who  presented  the  offer  (the  "Presenting
Distributor").  No  settlements  with respect to Notes upon such terms may occur
prior to such  transmitting  or filing and the  Distributors  will not, prior to
such transmitting or filing, mail confirmations to customers who have offered to
purchase  Notes upon such  terms.  After  such  transmitting  or filing,  sales,
mailing of  confirmations  and  settlements may occur with respect to Notes upon
such terms, subject to the provisions of "Delivery of Prospectus" below.



- --------------------------
*        If clause (b)(3) of Rule 424 is  applicable,  such filing shall be made
         no later than the fifth  business day following the earlier of the date
         of determination of the settlement  information  described below or the
         date such Pricing  Supplement is first used. If clause (b)(2) or (b)(5)
         of Rule 424 is applicable,  such filing shall be made no later than the
         second business day following the earlier of the date of  determination
         of the settlement  information  or the date such Pricing  Supplement is
         first used.
                                      C-4
<PAGE>
                  Pricing  Supplements  delivered  to the  Distributors  will be
         sent:

                  if sent to CS First Boston Corporation:

                           CS First Boston Corporation
                           Five World Trade Center, 7th Floor
                           New York, New York  10048
                           Attn:  Joan Bryan
                           Telephone:  (212) 322-5105


                  if sent to Salomon Brothers Inc:

                           Salomon Brothers Inc
                           8800 Hidden River Parkway
                           Tampa, Florida, 33637
                           Attn:  Enrique Castro
                           Telephone:  (813) 558-7165
                                       (813) 558-4123

                  If the Company  decides to post rates and a decision  has been
reached  to change  interest  rates,  the  Company  will  promptly  notify  each
Distributor.  Each Distributor will forthwith suspend solicitation of purchases.
At that time,  the  Distributors  will  recommend and the Company will establish
rates to be so "posted."  Following  establishment  of posted rates and prior to
the   transmitting  or  filing  described  in  the  preceding   paragraph,   the
Distributors may only record  indications of interest in purchasing Notes at the
posted rates.  Once any  Distributor  has recorded any indication of interest in
Notes at the posted  rates and  communicated  with the  Company,  if the Company
plans  to  accept  an  offer at the  posted  rate,  it will  prepare  a  Pricing
Supplement   reflecting   such  posted  rate  and,   after   approval  from  the
Distributors,  will arrange to have 10 copies of the Pricing  Supplement,  filed
with, or  transmitted by means  reasonably  calculated to result in filing with,
the Commission via the  Commission's  Edgar System pursuant to Rule 424(b) under
the Act and will supply at least 10 copies of the Prospectus, as then amended or
supplemented,   and  bearing  such  Pricing   Supplement,   to  the   Presenting
Distributor.  No  settlements  at the  posted  rates  may  occur  prior  to such
transmitting or filing and the Distributors will not, prior to such transmitting
or filing, mail confirmations to customers who have offered to purchase Notes at
the  posted  rates.  After  such  transmitting  or  filing,  sales,  mailing  of
confirmations and settlements may resume, subject to the provisions of "Delivery
of Prospectus" below.

                  Outdated Pricing Supplements,  and copies of the Prospectus to
which  they  are  attached  (other  than  those  retained  for  files),  will be
destroyed.
                                      C-5
<PAGE>
Suspension of Solicitation:  Amendment or Supplement
- ----------------------------------------------------

                  As provided  in the  Distribution  Agreement,  the Company may
instruct the  Distributors to suspend  solicitation of offers to purchase at any
time,  and upon  receipt  of at least one Market  Day's  prior  notice  from the
Company,  the Distributors will each forthwith suspend  solicitation  until such
time as the Company has advised them that solicitation of offers to purchase may
be resumed.

                  If the  Distributors  receive  the  notice  from  the  Company
contemplated by Section 3(b) or 4(b) of the  Distribution  Agreement,  they will
promptly suspend  solicitation and will only resume  solicitation as provided in
the Distribution Agreement. If the Company is required, pursuant to Section 4(b)
of the Distribution  Agreement,  to prepare an amendment or supplement,  it will
promptly furnish each Distributor with the proposed amendment or supplement;  if
the Company  decides to amend or supplement  the  Registration  Statement or the
Prospectus  relating to the Notes, it will promptly advise each  Distributor and
will  furnish each  Distributor  with the proposed  amendment or  supplement  in
accordance  with the  terms of the  Distribution  Agreement.  The  Company  will
promptly file such  amendment or  supplement  with the  Commission,  provide the
Distributors  with copies of any such  amendment or  supplement,  confirm to the
Distributors  that  such  amendment  or  supplement  has  been  filed  with  the
Commission and advise the Distributors that solicitation may be resumed.

                  Any such suspension shall not affect the Company's obligations
under the Distribution Agreement;  and in the event that at the time the Company
suspends  solicitation  of offers to purchase  there shall be any offers already
accepted by the Company  outstanding for  settlement,  the Company will have the
sole  responsibility  for  fulfilling  such  obligations.  The  Company  will in
addition promptly advise the Distributors and the Trustee if such offers are not
to be settled  and if copies of the  Prospectus  as in effect at the time of the
suspension  may not be  delivered  in  connection  with the  settlement  of such
offers.


Acceptance of Offers
- --------------------

                  Each  Distributor  will  promptly  advise the Company,  at its
option orally or in writing, of each reasonable offer to purchase Notes received
by it, other than those rejected by such  Distributor.  Each Distributor may, in
its discretion reasonably exercised,  without notice to the Company,  reject any
offer  received by it, in whole or in part. The Company will have the sole right
to accept offers to purchase Notes and may reject any such offer, in whole or in
part.  If the  Company  accepts or rejects  an offer,  in whole or in part,  the
Company will promptly so notify the Presenting Distributor.


Confirmation
- ------------

                  For each accepted offer, the Presenting Distributor will issue
a  confirmation,  in writing,  to the  purchaser,  with a copy to the  Company's
Treasury Department, setting forth the 
                                      C-6
<PAGE>
Purchase  Information  (as defined  under II below with respect to  Certificated
Notes and III below with respect to  Book-Entry  Notes) and delivery and payment
instructions; provided, however, that, in the case of the confirmation issued to
the purchaser,  no confirmation shall be delivered to the purchaser prior to the
delivery of the Prospectus referred to below.


Determination of Settlement Date
- --------------------------------

                  The receipt of immediately  available  funds by the Company in
payment for a Note and (i) in the case of Certificated Notes, the authentication
and issuance of such Note and (ii) in the case of Book-Entry Notes, entry by the
Presenting  Distributor  of an SDFS  deliver  order  through  DTC's  Participant
Terminal System to credit such Note to the account of a Participant  purchasing,
or acting for the  purchase  of, such Note,  shall,  with  respect to such Note,
constitute  "settlement."  All offers accepted by the Company will be settled on
the third Market Day next  succeeding the date of acceptance,  unless  otherwise
agreed by the purchaser and the Company.  The settlement date shall be specified
upon receipt of an offer to purchase. Prior to 3:00 p.m., New York City time, on
the Market Day prior to the  settlement  date,  the Company  will  instruct  the
Trustee to authenticate  and deliver the Notes no later than 2:15 p.m., New York
City time, on the settlement date except as to Book-entry Notes described below.


Delivery of Prospectus
- ----------------------

                  A  copy  of  the  Prospectus  as  most  recently   amended  or
supplemented on the date of delivery  thereof (except as provided below) must be
delivered to a purchaser  prior to or together  with the earlier of the delivery
of (i) the written confirmation  provided for above, and (ii) any Note purchased
by such  purchaser.  (For this  purpose,  entry of an SDFS deliver order through
DTC's  Participant  Terminal  System  to  credit  a  Note  to the  account  of a
Participant  purchasing,  or acting for the purchaser of, a Note shall be deemed
to  constitute  delivery  of such  Note.)  The  Company  shall  ensure  that the
Presenting  Distributor  receives copies of the Prospectus and each amendment or
supplement  thereto  (including   appropriate   Pricing   Supplements)  in  such
quantities and within such time limits as will enable the Presenting Distributor
to deliver such  confirmation  or Note to a purchaser as  contemplated  by these
procedures  and in compliance  with the first  sentence of this  paragraph.  If,
since the date of acceptance of a purchaser's  offer,  the Prospectus shall have
been  supplemented  solely to reflect any sale of Notes on terms  different from
those  agreed to between the Company  and such  purchaser  or a change in posted
rates not applicable to such  purchaser,  such  purchaser  shall not receive the
Prospectus  as  supplemented  by such new  supplement,  but  shall  receive  the
Prospectus as  supplemented to reflect the terms of the Notes being purchased by
such  purchaser and otherwise as most recently  amended or  supplemented  on the
date of delivery of the Prospectus.
                                      C-7
<PAGE>
Authenticity of Signatures
- --------------------------

                  The Company will cause the Trustee to furnish the Distributors
from  time  to time  with  the  specimen  signatures  of  each of the  Trustee's
officers,  employees  or  agents  who have been  authorized  by the  Trustee  to
authenticate  Notes, but no Distributor will have any obligation or liability to
the Company or the Trustee in respect of the  authenticity  of the  signature of
any officer,  employee or agent of the Company or the Trustee on any Note or the
Global Note (as defined in Part III).

Advertising Expenses
- --------------------

                  The Company will determine with the Distributors the amount of
advertising that may be appropriate in offering the Notes.  Advertising expenses
will be paid by the Company.


Market Day
- ----------

                  "Market  Day"  means  (a) with  respect  to any  Note  (unless
otherwise  provided in this  definition),  any day that is a Business Day in The
City of New York,  (b) with respect to LIBOR Notes only, any Business Day in New
York that is also a London  Market  Day,  (c) with  respect to Foreign  Currency
Notes (other than Foreign Currency Notes  denominated in European Currency Units
("ECUs"))  only,  any day  that is a  Business  Day  both in New York and in the
principal financial center in the country of the Specified Currency and (d) with
respect  to  Foreign  Currency  Notes  denominated  in ECU,  any date  that is a
Business Day in The City of New York that is designated as an ECU settlement day
by the ECU Banking  Association in Paris or otherwise  generally regarded in the
ECU interbank market as a day in which payments in ECU are made.


Trustee Not to Risk Funds
- -------------------------

                  Nothing  herein shall be deemed to require the Trustee to risk
or expend its own funds in connection with any payment made to the Company,  the
Distributors,  DTC or any Holder of a Note,  it being  understood by all parties
that payments made by the Trustee to the Company,  the Distributors,  DTC or any
Holder of a Note shall be made only to the extent that funds are provided to the
Trustee for such purpose.


PART II:  ADMINISTRATIVE PROCEDURES FOR CERTIFICATED NOTES
- ----------------------------------------------------------

Form and Denominations
- ----------------------

                  The   Certificated   Notes  shall  be  issued  only  in  fully
registered form in denominations of $1,000 and integral multiples of $1,000, or,
in the case of Foreign  Currency Notes, in such minimum  denomination,  not less
than the equivalent of $1,000, and such greater
                                      C-8
<PAGE>
denomination or  denominations  in excess thereof,  as shall be set forth in the
applicable Pricing Supplement.


Transfers and Exchanges
- -----------------------

                  A Certificated  Note may be presented for transfer or exchange
at the principal  corporate trust office of the Trustee in The City of New York.
Certificated  Notes will be  exchangeable  for other  Certificated  Notes of any
authorized  denominations  and of like tenor and in a like  aggregate  principal
amount,  upon  surrender  of  the  Certificated  Notes  to be  exchanged  at the
corporate  trust  office  of  the  Trustee.   Certificated  Notes  will  not  be
exchangeable for Book-Entry Notes.


Payment at Maturity
- -------------------

                  Upon presentation of each  Certificated Note at Maturity,  the
Trustee  (or a duly  authorized  Paying  Agent)  will pay the  principal  amount
thereof,  together with any premium and accrued  interest due at Maturity.  Such
payment  will  be  made  in  immediately  available  funds,  provided  that  the
Certificated  Note is  presented in time for the Paying Agent to make payment in
such funds in accordance  with its normal  procedures.  The Company will provide
the Trustee (and any Paying  Agent) with funds  available  for immediate use for
such purpose.  Certificated  Notes presented at Maturity will be canceled by the
Trustee as provided in the Indenture. For special provisions relating to Foreign
Currency Notes, see the section entitled "Special Provisions Relating to Foreign
Currency Notes" in the Prospectus Supplement.


Details for Settlement
- ----------------------

                  For each offer for Certificated Notes accepted by the Company,
the  Presenting   Distributor  shall  communicate  to  the  Company's   Treasury
Department  prior to 3:00 p.m.,  New York City time, on the Market Day preceding
the  settlement  date,  by telephone,  telex,  facsimile  transmission  or other
acceptable means, the following information (the "Purchase Information"):

                  1.       Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner").

                  2.       Exact address of registered  owner and, if different,
                           the  address  for  delivery,  notices  and payment of
                           principal and any premium and interest.

                  3.       Taxpayer identification number of registered owner.

                  4.       Principal   amount   of  each   Note  in   authorized
                           denominations to be delivered to registered owner.
                                      C-9
<PAGE>
                  5.       Stated Maturity of each Note.

                  6.       In the case of Fixed Rate Notes, the interest rate of
                           each Note,  whether such Note is an  Amortizing  Note
                           and, if so, the amortization schedule; in the case of
                           Floating  Rate Notes or Indexed  Notes,  the interest
                           rate  formula,  the Spread or Spread  Multiplier  (if
                           any), the maximum or minimum interest rate limitation
                           (if any), the Calculation or Determination Agent, the
                           Calculation  Dates,  the Initial  Interest  Rate, the
                           Interest Payment Dates, the Regular Record Dates, the
                           Index Maturity,  the Interest Determination Dates and
                           the Interest Reset Dates, in each case, to the extent
                           applicable with respect to each Note.

                  7.       Redemption  and/or repayment  provisions,  if any, of
                           each Note.

                  8.       Trade date of each Note.

                  9.       Settlement date (Issue Date) of each Note.

                  10.      Presenting  Distributor's  commission  (to be paid in
                           the form of a discount from the proceeds  remitted to
                           the Company upon settlement).

                  11.      Price.

                  12.      Currency or currency unit in which each Note is to be
                           denominated  and exchange rate applicable to purchase
                           Foreign  Currency  Notes  to  be  paid  for  in  U.S.
                           dollars.

                  13.      Original issue discount, if any.

                  14.      Whether  the  Company  has the  option to extend  the
                           Stated  Maturity of the Note and if so, the Extension
                           Period,  the Election Dates and the Final Maturity of
                           such Note.

                  15.      Whether the Note is a Renewable  Note, and if it is a
                           Renewable  Note,  the Initial  Maturity  Date and the
                           Final Maturity Date.

                  16.      In  the  case  of an  Indexed  Note,  any  additional
                           information  relevant to determination of the amounts
                           of  principal  (and  premium,  if  any)  or  interest
                           payable.
                                      C-10
<PAGE>
                  17.      Any additional applicable terms of each Note.

                  The Issue Date of, and the settlement  date for,  Certificated
Notes will be the same.  Before  accepting  any offer to  purchase  Certificated
Notes to be settled in less than three  Market  Days,  the Company  shall verify
that the Trustee will have adequate time to prepare and authenticate the Notes.

                  Immediately  after  receiving  the  details for each offer for
Certificated  Notes from the  Presenting  Distributor,  the Company will,  after
recording the details and any necessary  calculations,  communicate the Purchase
Information by telephone,  telex,  facsimile  transmission  or other  acceptable
means, to the Trustee. Each such instruction given by the Company to the Trustee
shall constitute a continuing  representation and warranty by the Company to the
Trustee and the  Distributors  that (i) the  issuance and delivery of such Notes
have been duly and validly  authorized by the Company and (ii) such Notes,  when
completed,  authenticated and delivered,  shall constitute the valid and legally
binding obligation of the Company.  The Trustee will assign to and enter on each
Note a transaction number.

                  The Company will deliver to the Trustee a pre-printed four-ply
packet for such  Certificated  Note,  which  packet will  contain the  following
documents in forms that have been approved by the Company,  the Distributors and
the Trustee:

         1.       Certificated Note with customer confirmation.

         2.       Stub One - For the Trustee.

         3.       Stub Two - For the Presenting Distributor.

         4.       Stub Three - For the Company.

                  Prior to 2:00  p.m.,  New York City  time,  on the  Settlement
Date,  the Trustee will complete such  Certificated  Note and will  authenticate
such  Certificated Note and deliver it (with the confirmation) and Stubs One and
Two to such  Distributor,  and such Distributor will acknowledge  receipt of the
Note by stamping or otherwise  marking Stub One and returning it to the Trustee.
The Trustee will send Stub Three to the Company by first-class mail.


Settlement; Note Deliveries and Cash Payment
- --------------------------------------------

                  The Company will deliver to the Trustee at the commencement of
the  program  and  from  time to  time  thereafter  a  supply  of duly  executed
Certificated  Notes with  pre-printed  control numbers adequate to implement the
program. Upon the receipt of appropriate documentation and instructions from the
Company in accordance with the applicable Officers' Certificate and verification
thereof,  the Trustee  will cause the  Certificated  Notes to be  completed  and
authenticated and hold the Certificated Notes for delivery against payment.
                                      C-11
<PAGE>
                  The  Trustee  will  deliver the  Certificated  Notes (with the
confirmation)  and Stubs One and Two, in accordance with  instructions  from the
Company,  to the  Presenting  Distributor.  If the  Distributor  is placing such
Certificated  Notes as agent,  such delivery will be made for the benefit of the
purchaser only against receipt and the Presenting  Distributor  will acknowledge
receipt of the Notes through a broker's receipt. Such delivery will be made only
against such acknowledgement of receipt and evidence that instructions have been
given for  payment  to the  Company  at such  account  of the  Company as it may
specify in writing,  in immediately  available  funds, of an amount equal to the
principal  amount  of  such  Notes,  less  the  applicable  commission.  If  the
Presenting Distributor in any instance advances its own funds, the Company shall
not use any of the proceeds of such sale to acquire securities.

                  If the  Distributor  is  placing  such  Certificated  Notes as
agent,  the Presenting  Distributor,  as the Company's  agent,  will deliver the
Notes  (with the  written  confirmation  provided  for  above) to the  purchaser
thereof  against  payment  therefor by such purchaser in  immediately  available
funds.

                  Delivery of any confirmation or Note to a purchaser thereof by
a  Distributor,  acting as agent or principal,  will be made in compliance  with
"Delivery of Prospectus" in Part I above.

                  Certificated Notes delivered to the Distributors will be sent:

                  If sent to CS First Boston Corporation

                           CS First Boston Corporation
                           Five World Trade Center
                           7th Floor
                           New York, New York  10048
                           Attn:  Paul Riley


                  If sent to Salomon Brothers Inc

                           Salomon Brothers Inc
                           c/o The Bank of New York
                           Dealer Clearance Department
                           1 Wall Street, 3rd Floor
                           New York, New York   10005
                           Attn:  For the account of Salomon Brothers Inc


Fails (Distributor Acting as Agent)
- -----------------------------------

                  In the event that a purchaser shall fail to accept delivery of
and make payment for a Certificated  Note on the settlement date, the Presenting
Distributor will notify the Trustee and the 
                                      C-12
<PAGE>
Company, by telephone,  confirmed in writing. If such Certificated Note has been
delivered to the Presenting Distributor,  as the Company's agent, the Presenting
Distributor  shall return such Note to the Trustee.  If funds have been advanced
for the purchase of such Note,  the Trustee  will,  immediately  upon receipt of
such Note,  debit the account of the Company for the amount so advanced  and the
Trustee shall refund the payment  previously made by the Presenting  Distributor
in  immediately  available  funds.  Such payments will be made on the settlement
date, if possible,  and in any event not later than the Market Day following the
settlement  date.  If the fail shall have occurred for any reason other than the
failure of the Presenting Distributor to provide the Purchase Information to the
Company  or to  provide  a  confirmation  to the  purchaser,  the  Company  will
reimburse the Presenting  Distributor on an equitable  basis for its loss of the
use of funds  during the period  when the funds were  credited to the account of
the Company.

                  Immediately upon receipt of the  Certificated  Note in respect
of which the fail  occurred,  the Trustee will make  appropriate  entries in its
records to reflect the fact that the Note was never  issued and the Note will be
canceled and disposed of as provided in the Indenture.


PART III:  ADMINISTRATIVE PROCEDURES FOR BOOK-ENTRY NOTES
- ---------------------------------------------------------

                  In connection with the  qualification  of the Book-Entry Notes
for  eligibility  in the book-entry  system  maintained by DTC, the Trustee will
perform the custodial,  document control and administrative  functions described
below, in accordance with its obligations under a Letter of Representations (the
"Letter")  from the Company and the Trustee to DTC dated as of  _______________,
and a Medium-Term Note Certificate  Agreement  between the Trustee and DTC dated
as of ____________, and its obligations as a participant in DTC, including DTC's
Same-Day Funds Settlement System ("SDFS").


Form, Denominations and Registration
- ------------------------------------

                  All  Book-Entry  Notes of the same  tenor and  having the same
Issue Date, will be represented  initially by a single note (a "Global Note") in
fully registered form without coupons. Unless otherwise stated in the applicable
Pricing  Supplement,  Book-Entry Notes will represent Notes  denominated in U.S.
dollars.  Global  Notes will be issued in  denominations  of $1,000 and integral
multiples thereof.  Global Notes will be denominated in principal amounts not in
excess of  $150,000,000.  If one or more  Book-Entry  Notes  having an aggregate
principal  amount in excess of  $150,000,000  would,  but not for the  preceding
sentence,  be represented by a single Global Note,  then one Global Note will be
issued to represent each  $150,000,000  principal amount of such Book-Entry Note
or Notes and an additional Global Note will be issued to represent any remaining
principal  amount of such  Book-Entry Note or Notes. In such a case, each of the
Global Notes  representing  such  Book-Entry note or Notes shall be assigned the
same CUSIP  number.  Each Global Note will be  registered  in the name of Cede &
Co.,  as  nominee  for  DTC,  on the  Security  Register  maintained  under  the
Indenture.  The beneficial  owner of a Book-Entry  Note (or one or more indirect
participants  in DTC  designated  by  such  owner)  will  designate  one or more
participants  in DTC (with respect to such Note, the  "Participants")  to act as
agent  or  
                                      C-13
<PAGE>
agents for such owner in connection  with the  book-entry  system  maintained by
DTC, and DTC will record in book-entry  form, in  accordance  with  instructions
provided by such Participants, a credit balance with respect to such Note in the
account of such Participants. The ownership interest of such beneficial owner in
such Note will be recorded  through the records of such  Participants or through
the separate records of such Participants and one or more indirect  participants
in DTC.


CUSIP Numbers
- -------------

                  The  Company has  arranged  with the CUSIP  Service  Bureau of
Standard & Poor's  Corporation  (the "CUSIP Service Bureau") for the reservation
of a series of CUSIP numbers (including tranche numbers), such series consisting
of  approximately  900 CUSIP  numbers and relating to Global Notes  representing
Book-Entry  Notes.  The Company has  obtained  from the CUSIP  Service  Bureau a
written list of such reserved  CUSIP numbers and has delivered it to the Trustee
and DTC.  The Trustee  will assign  CUSIP  numbers  serially to Global  Notes as
described  below  under  "Details  for  Settlement."  DTC will  notify the CUSIP
Service Bureau  periodically  of the CUSIP numbers that the Trustee has assigned
to Global Notes. The Trustee will notify the Company at the time when fewer than
100 of the reserved CUSIP numbers remain unassigned to the Global Notes; and the
Company will reserve  additional  CUSIP  numbers for  assignment to Global Notes
representing Book-Entry Notes. Upon obtaining such additional CUSIP numbers, the
Company shall deliver a list of such additional CUSIP numbers to the Trustee and
DTC.


Transfers and Exchanges for the Purpose of Consolidation
- --------------------------------------------------------

                  Transfers of a Book-Entry  Note will be  accomplished  by book
entries made by DTC and, in turn, by Participants (and, in certain cases, one or
more indirect  participants  in DTC) acting on behalf of beneficial  transferors
and transferees of such Note.

                  The Trustee may upon notice to the Company  deliver to DTC and
the CUSIP Service  Bureau at any time a written notice (a copy of which shall be
attached to the Global Note  resulting  from such  exchange)  specifying (i) the
CUSIP numbers of two or more outstanding Global Notes that represent  Book-Entry
Notes of the same tenor and having the same Issue Date,  and for which  interest
(if any) has been paid to the same date,  (ii) a date  occurring at least thirty
days after such written  notice is delivered and at least thirty days before the
next Interest  Payment Date (if any) for such Notes,  on which such Global Notes
shall be exchanged  for a single  replacement  Global Note and (iii) a new CUSIP
number to be assigned to such  replacement  Global Note.  Upon receipt of such a
notice,  DTC will send to its  Participants  (including  the  Trustee) a written
reorganization  notice to the effect that such exchange will occur on such date.
Prior to the  specified  exchange  date,  the Trustee  will deliver to the CUSIP
Service  Bureau a written  notice  setting  forth such exchange date and the new
CUSIP number and stating that, as of such  exchange  date,  the CUSIP numbers of
the  Global  Notes to be  exchanged  will no longer be valid.  On the  specified
exchange  date,  the Trustee will exchange such Global Notes for a single Global
Note bearing the new CUSIP number and the CUSIP numbers of the exchanged  Global
                                      C-14
<PAGE>
Notes will, in accordance with CUSIP Service Bureau procedures,  be canceled and
not immediately reassigned.


Notice of Interest Payment Dates and Regular Record Dates
- ---------------------------------------------------------

                  To the extent  then known,  on the first  Market Day of March,
June,  September,  and  December of each year,  the Trustee  will deliver to the
Company and DTC a written list of Record Dates and Interest  Payment  Dates that
will occur with respect to Floating Rate  Book-Entry  Notes during the six-month
period beginning on such first Market Day.


Payments of Principal and Interest
- ----------------------------------

                  (a)  Payments of Interest  Only.  Promptly  after each Regular
Record Date,  the Trustee  will deliver to the Company and DTC a written  notice
specifying by CUSIP number the amount of interest to be paid on each Global Note
on the  following  Interest  Payment  Date (other than an Interest  Payment Date
coinciding  with  Maturity)  and the total of such  amounts.  The  Company  will
confirm with the Trustee the amount payable on each Global Note on such Interest
Payment  Date.  DTC will confirm the amount  payable on each Global Note on such
Interest Payment Date by reference to the daily or weekly bond reports published
by Standard & Poor's Corporation.  The Company will pay to the Trustee the total
amount of interest due on such  Interest  Payment Date (other than at Maturity),
and the  Trustee  will pay such amount to DTC at the times and in the manner set
forth below under "Manner of Payment".

                  (b) Payments at Stated Maturity.  On or about the first Market
Day of each  month,  the Trustee  will  deliver to the Company and DTC a written
list of principal  and  interest to be paid on each Global Note  maturing in the
following  month.  The Company,  the Trustee and DTC will confirm the amounts of
such principal and interest payments with respect to each such Global Note on or
about the fifth Market Day  preceding  the Stated  Maturity of such Global Note.
The Company will pay to the Trustee,  as the paying agent,  the principal amount
of such Global Note,  together with interest due at such Stated  Maturity.  Upon
surrender  of a Global  Note,  the Trustee  will pay such  amounts to DTC at the
times and in the manner set forth below under "Manner of Payment". If any Stated
Maturity of a Global Note representing Book-Entry Notes is not a Market Day, the
payment due on such day shall be made on the next  succeeding  Market Day and no
interest  shall accrue on such payment for the period from and after such Stated
Maturity. Promptly after payment to DTC of the principal and any interest due at
the Stated  Maturity of such Global  Note,  the Trustee  will cancel such Global
Note and return such Global Note to the Company in accordance  with the terms of
the Indenture.

                  (c) Payment upon Redemption.  The Trustee will comply with the
terms of the Letter with regard to  redemptions  or repayments of the Book-Entry
Notes.  In the case of  Book-Entry  Notes stated by their terms to be redeemable
prior to Stated  Maturity,  [at least 60 calendar days before the date fixed for
redemption] (the "Redemption Date"), the Company shall notify the Trustee of the
Company's  election to redeem such Book-Entry  Notes in whole or in part and the
                                      C-15
<PAGE>
principal  amount  of such  Book-Entry  Notes  to be so  redeemed.  At  least 30
calendar days but not more than 60 calendar days prior to the  Redemption  Date,
the Trustee shall notify DTC of the Company's election to redeem such Book-Entry
Notes.  The Trustee shall notify the Company and DTC of the CUSIP numbers of the
particular  Book-Entry  Notes to be  redeemed  either  in whole or in part.  The
Company,  the Trustee and DTC will confirm the amounts of such principal and any
premium and interest  payable with  respect to each such  Book-Entry  Note on or
about the fifth Market Day  preceding  the  Redemption  Date of such  Book-Entry
Note.  The Company will pay the  Trustee,  in  accordance  with the terms of the
Indenture,  the amount  necessary  to redeem  each such  Book-Entry  Note or the
applicable  portion of each such  Book-Entry  Note.  The  Trustee  will pay such
amount to DTC at the times and in the manner set forth  herein.  Promptly  after
payment  to DTC of the  amount due on the  Redemption  Date for such  Book-Entry
Note,  the Trustee shall cancel any such  Book-Entry  Note redeemed in whole and
shall deliver it to the Company with an  appropriate  debit advice.  If a Global
Note is to be  redeemed in part,  the  Trustee  will cancel such Global Note and
issue a Global Note which shall  represent the remaining  portion of such Global
Note and shall bear the CUSIP number of the canceled Global Note.

                  (d) Manner of Payment.  The total amount of any  principal and
interest due on Global Notes on any Interest  Payment Date or at Maturity  shall
be paid by the Company to the  Trustee in  immediately  available  funds on such
date available for use as of 9:30 A.M. New York City time. The Company will make
such payment on such Global Notes by wire  transfer to the Trustee.  The Company
will confirm instructions  regarding payment in writing to the Trustee. Prior to
1:00 p.m., New York City time, on each date of Maturity of a Book-Entry  Note or
as soon as possible  thereafter,  the Trustee will pay by separate wire transfer
(using Fedwire message entry instructions in a form previously specified by DTC)
to an account at the Federal  Reserve Bank of New York  previously  specified by
DTC in funds  available  for  immediate  use by DTC,  each  payment of principal
(together with interest  thereon) due at Maturity on Book-Entry  Notes.  On each
Interest  Payment Date,  interest payment shall be made to DTC in same day funds
in  accordance  with  existing   arrangements   between  the  Trustee  and  DTC.
Thereafter,  on each  such  date,  DTC will  pay,  in  accordance  with its SDFS
operating  procedures  then in  effect,  such  amounts  in funds  available  for
immediate use to the respective Participants in whose names the Book-Entry Notes
represented  by  such  Global  Notes  are  recorded  in  the  book-entry  system
maintained  by DTC.  NEITHER THE  COMPANY NOR THE TRUSTEE  SHALL HAVE ANY DIRECT
RESPONSIBILITY  OR LIABILITY FOR THE PAYMENT BY DTC TO SUCH  PARTICIPANTS OF THE
PRINCIPAL OF AND ANY PREMIUM AND INTEREST ON THE BOOK-ENTRY NOTES.

                  (e) Withholding  Taxes. The amount of any taxes required under
applicable  law to be withheld  from any interest  payment on a Book-Entry  Note
will be determined and withheld by the Participant,  indirect participant in DTC
or other person  responsible for forwarding  payments and materials  directly to
the beneficial owner of such Note.

Details for Settlement
- ----------------------

                  For each offer for  Book-Entry  Notes accepted by the Company,
the  Presenting   Distributor  shall  communicate  to  the  Company's   Treasury
Department  prior to 11:00  a.m.,  New 
                                      C-16
<PAGE>
York City time, on the first Market Day after the sale date (or on the sale date
if such sale is to be settled  within  one Market  Day),  by  telephone,  telex,
facsimile transmission or other acceptable means, the following information (the
"Purchase Information"):

                  1.       Principal amount of the Notes.

                  2.       Stated Maturity of the Notes.

                  3.       In the case of Fixed Rate Notes, the interest rate of
                           the Notes  and  whether  such  Note is an  Amortizing
                           Note, and, if so, the amortization  schedule;  in the
                           case  of  Floating  Rate  Notes  or  Indexed   Notes,
                           interest   rate   formula,   the   Spread  or  Spread
                           Multiplier (if any), the maximum or minimum  Interest
                           rate   limitation  (if  any),   the   Calculation  or
                           Determination   Agent,  the  Calculation  Dates,  the
                           Initial  Interest Rate,  the Interest  Payment Dates,
                           the Regular  Record Dates,  the Index  Maturity,  the
                           Interest  Determination  Dates and the Interest Reset
                           Dates,  in each case, to the extent  applicable  with
                           respect to the Notes.

                  4.       Redemption  and/or repayment  provisions,  if any, of
                           the Notes.

                  5.       Trade date of the Notes.

                  6.       Settlement date (Issue Date) of the Notes.

                  7.       Presenting  Distributor's  commission  (to be paid in
                           the form of a discount from the proceeds  remitted to
                           the Company upon settlement).

                  8.       Price.

                  9.       Currency or  currency  unit in which the Notes are to
                           be  denominated   and  exchange  rate  applicable  to
                           purchase  Foreign  Currency  Notes  payable  in  U.S.
                           dollars.

                  10.      Original issue discount, if any.

                  11.      Whether  the  Company  has the  option to extend  the
                           Stated  Maturity of the Note and if so, the Extension
                           Period,  the Election Dates and the Final Maturity of
                           such Note.
                                      C-17
<PAGE>
                  12.      Whether the Note is a Renewable  Note, and if it is a
                           Renewable  Note,  the Initial  Maturity  Date and the
                           Final Maturity Date.

                  13.      In  the  case  of an  Indexed  Note,  any  additional
                           information  relevant to determination of the amounts
                           of  principal  (and  premium,  if  any)  or  interest
                           payable.

                  14.      Any additional applicable terms of the Notes.

                  The Issue Date of,  and the  settlement  date for,  Book-Entry
Notes will be the same. Before accepting any offer to purchase  Book-Entry Notes
to be settled in less than three Market Days,  the Company shall verify that the
Trustee will have adequate time to prepare and authenticate the Global Notes.

                  If the initial  interest rate for a Floating  Rate  Book-Entry
Note has not  been  determined  at the time  that  the  foregoing  procedure  is
completed,  the procedures  described in the following two  paragraphs  shall be
completed as soon as such rate has been  determined but no later than 12:00 Noon
and 2:00 p.m.,  New York City time, as the case may be, on the Market Day before
the settlement date.

                  Immediately  after  receiving  the  details for each offer for
Book-Entry Notes from the Presenting  Distributor and in any event no later than
12:00 Noon,  New York City time, on the first Market Day after the sale date (or
on the sale date if such sale is to be  settled  within  one  Market  Day),  the
Company  will,  after  recording  the  details and any  necessary  calculations,
communicate the Purchase Information by telephone, telex, facsimile transmission
or other acceptable  means, to the Trustee.  Each such instruction  given by the
Company to the Trustee shall constitute a continuing representation and warranty
by the Company to the Trustee and the  Distributors  that (i) the  issuance  and
delivery of such Note have been duly and validly  authorized  by the Company and
(ii) such Note, when duly issued, shall constitute the valid and legally binding
obligation of the Company.

                  Immediately after receiving the Purchase  Information from the
Company  and in any event no later  than 2:00 P.M.,  New York City time,  on the
first  Market Day after the sale date (or on the sale date if such sale is to be
settled  within one Market  Day),  the Trustee will assign a CUSIP number to the
Global Note representing such Book-Entry Note and will telephone the Company and
advise the Company of such CUSIP number and, as soon  thereafter as practicable,
the Company shall notify the Presenting  Distributor  of such CUSIP number.  The
Trustee will enter a pending deposit message through DTC's Participant  Terminal
System,  providing  settlement  information  to  DTC  (which  shall  route  such
information  to Standard & Poor's  Corporation).  Standard & Poor's  Corporation
will use the information  received in the pending deposit message to include the
amount of any  interest  payable and certain  other  information  regarding  the
related Global Note in the appropriate  daily or weekly bond report published by
Standard & Poor's Corporation.
                                      C-18
<PAGE>
Settlement; Global Note Delivery and Cash Payment
- -------------------------------------------------

                  The Company will deliver to the Trustee at the commencement of
the program and from time to time  thereafter a supply of duly  executed  Global
Notes with pre-printed  control numbers adequate to implement the program.  Upon
the receipt of appropriate  documentation  and instructions  from the Company in
accordance with the applicable Officers'  Certificate and verification  thereof,
the Trustee will cause the Global Note to be  completed  and  authenticated  and
hold the Global Note for delivery against payment.

                  Prior to 10:00  a.m.,  New York City time,  on the  Settlement
Date, the Trustee will enter  instructions  through DTC's  Participant  Terminal
System, using the function MT II, and DTC will credit such Note to the Trustee's
participant  account  at DTC.  Prior to 2:00 p.m.,  New York City  time,  on the
Settlement  Date,  the Trustee will enter an SDFD deliver  order  through  DTC's
Participant  Terminal  System  instructing  DTC to (i)  debit  such  Note to the
Trustee's   participant   account  and  credit  such  Note  to  the   Presenting
Distributor's  participant  account and (ii) debit the Presenting  Distributor's
settlement  account and credit the  Trustee's  settlement  account for an amount
equal  to the  price  of  such  Note  less  such  Distributor's  commission  (in
accordance with SDFS operating procedures in effect on the Settlement Date). The
entry of such a deliver order shall constitute a representation  and warranty by
the Trustee to DTC that (i) the Global Note  representing  such  Book-Entry Note
has been executed,  delivered and  authenticated and (ii) the Trustee is holding
such Global Note pursuant to the relevant Medium-Term Note Certificate Agreement
between the Trustee and DTC.

                  Prior to 2:00 p.m., New York City time, on the Settlement Date
unless  the  Presenting  Distributor  is the end  purchaser  of such  Note,  the
Presenting   Distributor   will  enter  an  SDFS  deliver  order  through  DTC's
Participant  Terminal  System  instructing  DTC (i) to debit  such  Note to such
Distributor's  participant  account  and  credit  such  Note to the  Participant
accounts  of the  Participants  with  respect to such Note and (ii) to debit the
settlement  accounts of such  Participants and credit the settlement  account of
such  Distributor  for an amount equal to the price of such Note (in  accordance
with SDFS operating procedures in effect on the settlement date).

                  Transfers of funds are subject to extension in accordance with
any extension of Fedwire closing  deadlines and in the other events specified in
the SDFS operating procedures in effect on the settlement date.

                  The Trustee,  upon confirming receipt of such funds, will wire
transfer the amount transferred to the Trustee, in funds available for immediate
use,  for the  account of the  Company,  to account no.  __________  at [name of
bank], [location of bank] (ABA No. __________).

                  Unless the Presenting Distributor is the end purchaser of such
Note, such  Distributor  will confirm the purchase of such Note to the purchaser
either  by  transmitting  to  the  Participants  with  respect  to  such  Note a
confirmation order or orders through DTC's  institutional  delivery system or by
mailing a written confirmation to such purchaser.
                                      C-19
<PAGE>
Fails
- -----

                  If  settlement  of  a  Book-Entry   Note  is   rescheduled  or
cancelled,  the  Company  shall  notify the  Trustee,  and upon  receipt of such
notice,  the Trustee will deliver to DTC,  through  DTC's  Participant  Terminal
System,  a  cancellation  message to such effect by no later than 2:00 p.m., New
York City time, on the Market Day immediately preceding the scheduled settlement
date.

                  If the Agent or Trustee has not entered an SDFS deliver  order
with  respect to a Book-Entry  Note,  then upon  written  request  (which may be
evidenced by telecopy transmission) of the Company, the Trustee shall deliver to
DTC, through DTC's Participant  Terminal System, as soon as practicable,  but no
later  than 2:00  p.m.,  New York City time,  on any  Market  Day, a  withdrawal
message instructing DTC to debit such Note to the Trustee's participant account.
DTC will process the withdrawal message, provided that the Trustee's participant
account  contains a principal amount of the Global Note  representing  such Note
that is at least  equal to the  principal  amount to be debited.  If  withdrawal
messages are processed with respect to all the Book-Entry Notes represented by a
Global  Note,  the  Trustee  will  mark  such  Global  Note  "cancelled",   make
appropriate entries in the Trustee's records and send such cancelled Global Note
to the  Company.  The CUSIP  number  assigned  to such  Global  Note  shall,  in
accordance  with  CUSIP  Service  Bureau   procedures,   be  cancelled  and  not
immediately reassigned. If withdrawal messages are processed with respect to one
or more, but not all, of the Book-Entry Notes  represented by a Global Note, the
Trustee will exchange such Global Note for two Global Notes,  one of which shall
represent such Book-Entry Note or Notes and shall be cancelled immediately after
issuance and the other of which shall represent the remaining  Book-Entry  Notes
previously  represented by the surrendered  Global Note and shall bear the CUSIP
number of the surrendered Global Note.

                  If the purchase  price for any  Book-Entry  Note is not timely
paid to the Participants  with respect to such Note by the beneficial  purchaser
thereof (or a person, including an indirect participant in DTC, acting on behalf
of such purchaser),  such Participants and, in turn, the Presenting  Distributor
may enter an SDFS  deliver  order  through  DTC's  Participant  Terminal  System
debiting such Note to such Distributor's  participant account and crediting such
Note  [free] to the  participant  account of the  Trustee  and shall  notify the
Trustee and the Company thereof.  Thereafter,  the Trustee, (i) will immediately
notify the  Company,  once the  Trustee  has  confirmed  that such Note has been
credited to its participant  account, and the Company shall immediately transfer
by Fedwire (in  immediately  available  funds) to the Presenting  Distributor an
amount  equal to the  price  of such  Note  which  was  previously  sent by wire
transfer to the account of the Company maintained at  _______________,  and (ii)
the Trustee will  deliver the  withdrawal  message and take the related  actions
described in the  preceding  paragraph.  Such debits and credits will be made on
the  settlement  date,  if  possible,  and in any event not later than 5:00 p.m.
__________ time on the following Market Day. If the fail shall have occurred for
any reason  other than  failure of the  Presenting  Distributor  to provide  the
Purchase  Information  to  the  Company  or to  provide  a  confirmation  to the
purchaser, the Company will reimburse the 
                                      C-20
<PAGE>
Presenting  Distributor  on an equitable  basis for its loss of the use of funds
during the period when the funds were credited to the account of the Company.

                  Notwithstanding the foregoing, upon any failure to settle with
respect to a Book-Entry  Note,  DTC may take any actions in accordance  with its
SDFS operating  procedures  then in effect.  In the event of a failure to settle
with respect to one or more, but not all, of the  Book-Entry  Notes to have been
represented  by a Global Note,  the Trustee will provide for the  authentication
and issuance of a Global Note  representing  the other  Book-Entry Notes to have
been  represented by such Global Note and will make  appropriate  entries in its
records.
<PAGE>
                         Arizona Public Service Company

                                   ("Company")

                           Medium-Term Notes, Series A

                   Due Nine Months or More from Date of Issue

                                 TERMS AGREEMENT
                                 ---------------


                                                               November 19, 1996


Arizona Public Service Company
400 North 5th Street
Phoenix, AZ   85004
Attention:  Treasurer

Ladies and Gentlemen:

                  We  offer  to  purchase,  on  and  subject  to the  terms  and
conditions of the  Distribution  Agreement  filed as an exhibit to the Company's
registration statement on Form S-3 (No. 333-15379)  ("Distribution  Agreement"),
the following Securities ("Notes") on the following terms:

                  Title:  6-3/4% Senior Notes Due 2006

                  Currency or Currency Units:  United States dollars

                  Stated Maturity:  November 15, 2006

                  Principal Amount:  $100,000,000

                  Public Offering Price:  99.639%

                  Original Issue Discount Security:  Yes ____  No    X

                  Denominations:  $1,000 and integral multiples thereof.

                  Purchase  Price (to be paid in immediately  available  funds):
                  98.989%, plus accrued interest, if any, from November 15, 1996
                  to the Settlement Date

                  Underwriting  Discount or Commission received from the Company
                  (%): .650%

                  Proceeds to Company (If different from Public  Offering Price)
                  (%): 98.989%

                  Optional  Redemption (option of the Company):  As described in
                  the Prospectus Supplement, dated November 19, 1996 (the "First
                  Prospectus Supplement")
<PAGE>
                  Optional Redemption (option of the Holder):  None

                  Sinking Fund:  None

                  Other Terms:  None

                  Trade Date:  November 19, 1996

                  Settlement Date (Issue Date):  November 22, 1996

                        *       *        *        *        *

Details for Settlement
- ----------------------

                           Exact  name in  which  the  Note or  Notes  are to be
                           registered ("registered owner"): Cede & Co.

                           Principal   amount   of  each   Note  in   authorized
                           denominations  to be delivered to  registered  owner:
                           $100,000,000

                        *       *        *        *        *

                  Our  agreement to purchase  the Notes  hereunder is subject to
the  conditions  set  forth  in  the  Distribution   Agreement,   including  the
conditions,  and the delivery of the documents,  set forth in Section 5 thereof.
If  for  any  reason  the  purchase  by the  undersigned  of  the  Notes  is not
consummated  other than because of a default by the  undersigned or a failure to
satisfy a condition  set forth in clause  (ii),  (iii) or (v) of Section 5(c) of
the Distribution Agreement,  the Company shall reimburse the undersigned for all
out-of-pocket expenses reasonably incurred by the undersigned in connection with
the offering of the Notes and not otherwise  required to be reimbursed  pursuant
to Section 4 of the Distribution Agreement.

                  The Notes will have the terms described in the Prospectus,  as
amended  on  November  19,  1996  and   supplemented  by  the  First  Prospectus
Supplement,  referred  to in  Section  2(a) of the  Distribution  Agreement.  No
Pricing Supplement will be prepared for the Notes.

                  The  principal  amount  of  Notes  to  be  purchased  by  each
Distributor is as specified in the First Prospectus Supplement.  The obligations
of the Distributors to purchase the Notes shall be several and not joint.

                  Notwithstanding the terms of the Distribution  Agreement,  the
Company and the Distributors agree that the Company shall prepare the Prospectus
Supplement  within a reasonable  time following the Settlement Date (Issue Date)
for the Senior Notes and, on the date of the filing thereof with the Commission,
to hold the Closing Date specified in Section 3(e) of the Distribution Agreement
at 8:00 A.M., Phoenix time, on such date. On such date,  Exhibits A and C to the
Distribution  Agreement  will be  completed  and  attached  to the  Distribution
Agreement.

                  If  any   Distributor   or   Distributors   default  in  their
obligations to purchase Notes pursuant to this Terms Agreement and the principal
amount of the Notes that such defaulting  Distributor or Distributors agreed but
failed to purchase is ten percent (10%) or less of the  principal  amount of the
Notes, the Distributors  may make  arrangements  satisfactory to the Company for
the purchase of the Notes by other persons,  including any of the  Distributors,
but if no such  arrangements  are made by the  Settlement  Date (Issue Date) the
nondefaulting  Distributors shall be obligated severally, in proportion to their
respective  commitments  hereunder,  to purchase the Notes that such  defaulting
Distributor or Distributors agreed but failed to purchase. If any Distributor or
Distributors so default and the aggregate principal amount of Notes with respect
to which such default or defaults 
                                      -2-
<PAGE>
occur is more than the above described amount and  arrangements  satisfactory to
the remaining  Distributors  and the Company for purchase of such Notes by other
persons are not made within  thirty-six  hours  after such  default,  this Terms
Agreement will  terminate  without  liability on the part of any  non-defaulting
Distributor,  except as provided in Section 9 of the Distribution  Agreement. As
used in this  Terms  Agreement,  the  term  "Distributor"  includes  any  person
substituted for a Distributor under this paragraph.  Nothing herein will relieve
a defaulting Distributor from liability for its default.

                  CS First Boston  Corporation is acting as  representative  for
the Distributors specified in the First Prospectus Supplement in connection with
the offering to which this Terms  Agreement  relates,  and any action under this
Terms  Agreement  taken by CS First Boston  Corporation in such capacity will be
binding upon the Distributors to which this Terms Agreement relates.

                  This Terms Agreement shall constitute an agreement between the
Company  and the  undersigned  for the sale and  purchase  of the Notes upon the
terms set forth herein and in the Distribution Agreement.

                                        Very truly yours,

                                        CS FIRST BOSTON CORPORATION
                                        SALOMON BROTHERS INC
                                        PAINEWEBBER INCORPORATED

                                        By:  CS FIRST BOSTON CORPORATION



                                        By Thomas R. Osborne
                                           ----------------------------
                                           Vice President

Accepted and agreed to 
as of the date set forth above.

ARIZONA PUBLIC SERVICE COMPANY


By Nancy E. Newquist
   -----------------------
   Treasurer
                                      -3-

================================================================================
                                   Exhibit 4.1


                         ARIZONA PUBLIC SERVICE COMPANY
               (formerly Central Arizona Light and Power Company)

                                       TO

                              THE BANK OF NEW YORK


                                      As trustee under Central Arizona Light and
                                        Power Company's Mortgage and Deed of
                                        Trust, Dated as of July 1, 1946.



                                 ---------------


                       Fifty-fourth Supplemental Indenture


                                 ---------------



                          Dated as of November 15, 1996


                       This Mortgage covers real property,
                         personal property and chattels.



              This instrument and the above-mentioned Mortgage and
           Deed of Trust contain after-acquired property provisions.



================================================================================
<PAGE>
                       FIFTY-FOURTH SUPPLEMENTAL INDENTURE

                                 ---------------

         INDENTURE, dated as of the 15th day of November, 1996, made and entered
into by and between ARIZONA PUBLIC SERVICE  COMPANY,  a corporation of the State
of Arizona,  the principal place of business and mailing address of which is 400
North Fifth Street,  Phoenix,  Arizona 85004  (hereinafter  sometimes called the
Company),  party of the first part, and THE BANK OF NEW YORK, a New York banking
corporation,  the  mailing  address of which is 101 Barclay  Street,  21st Floor
West, New York, New York 10286 (hereinafter sometimes called the Trustee), party
of the second part, as Trustee under the Mortgage and Deed of Trust, dated as of
July 1, 1946 (hereinafter called the Mortgage),  which Mortgage was executed and
delivered by the Company under its former name,  Central Arizona Light and Power
Company,  to secure  the  payment of bonds  issued or to be issued  under and in
accordance with the provisions of the Mortgage, reference to which said Mortgage
is hereby made, this Indenture (hereinafter called the Fifty-fourth Supplemental
Indenture) being supplemental thereto;

         WHEREAS,  said Mortgage was recorded and filed in Counties in the State
of Arizona as follows:

<TABLE>
<CAPTION>
                                                                                             Filed and Abstracted
                                                    Recorded as Real Mortgage                as Chattel Mortgage
                                                -----------------------------------         ---------------------
                                                                                              Chattel
                                                  Date         Book or                        Mortgage
                       County                   Recorded       Docket          Page             Book         Page
                       ------                   --------       ------          ----         ------------     ----
<S>                                              <C>             <C>            <C>              <C>          <C>
         Apache...........................       7-28-50          16              1               9           154
         Cochise..........................        2-3-53          80             28              19           292
         Coconino.........................       1-20-53          39              1              10           286
         Gila.............................       1-17-53          32             84              17           __
         Graham...........................       12-3-63          92             87              15           223
         Maricopa.........................        8-6-46         408            163              92           204
         Mohave...........................      11-13-57          28             68              12            13
         Navajo...........................      10-14-49          31            483              16           521
         Pima.............................       1-24-53         558            351              14           __
         Pinal............................      10-25-52          68             31              12           591
         Yavapai..........................        8-7-46          79              1              12           223
         Yuma.............................        8-1-47          58            173              21           265

and in Counties in the State of New Mexico as follows:

         McKinley.........................       5-31-61          36            153               4           295
         San Juan.........................       1-31-61         472            140               (No. 72441)
</TABLE>


the copy  recorded  in Yuma  County,  Arizona  also being  effective  for La Paz
County,  Arizona,  formed on December 31, 1982; and copies of said Mortgage were
filed with the office of the Bureau of Indian  Affairs at Window Rock,  Arizona,
and with the Navajo Tribe of Indians at Window Rock, Arizona, and in the offices
of the Secretary of State and the State Land  Department of the State of Arizona
(all the said  counties  and the said  offices  above  referred to being  herein
referred to as "jurisdictions"); and
<PAGE>
         WHEREAS, by the Mortgage,  the Company covenanted that it would execute
and  deliver  such  supplemental   indenture  or  indentures  and  such  further
instruments  and do such  further  acts as might be necessary or proper to carry
out more  effectually  the  purposes of the  Mortgage and to make subject to the
Lien of the Mortgage any property thereafter  acquired,  made or constructed and
intended to be subject to the Lien thereof; and

         WHEREAS,  the  Company  has  executed  and  delivered  to  the  Trustee
fifty-three  indentures  supplemental to the Mortgage (hereinafter  respectively
called the First through the Fifty-third  Supplemental  Indentures)  dated as of
December 1, 1947, April 1, 1949, February 1, 1950, December 1, 1950, February 1,
1953,  November 1, 1953, March 1, 1954, October 1, 1957, March 1, 1959, November
1, 1961, June 1, 1962, December 1, 1962,  September 1, 1963,  September 1, 1967,
April 1, 1970, March 15, 1972,  April 1, 1974,  February 15, 1975, June 1, 1975,
November 15, 1975, April 15, 1977,  January 15, 1978, March 1, 1979, October 15,
1979, May 15, 1980,  February 2, 1982, April 15, 1982, July 1, 1983, October 15,
1983, June 15, 1984,  January 15, 1985, May 1, 1985,  June 1, 1985,  November 1,
1985,  January 15, 1986,  March 1, 1986, May 1, 1986,  February 1, 1987, June 1,
1987,  November 15, 1987, April 1, 1989,  February 15, 1990, May 15, 1990, April
15, 1991,  December 15, 1991,  January 15, 1992,  March 1, 1992,  June 15, 1992,
February 1, 1993, August 1, 1993, August 1, 1993,  September 15, 1993, and March
1, 1994,  each of which has been or will be recorded or filed in, or a recording
or filing is or will be effective with respect to, each jurisdiction referred to
above; and

         WHEREAS,  in addition to the  property  described in the  Mortgage,  as
heretofore  supplemented  and amended,  the Company has acquired  certain  other
property, rights and interests in property; and

         WHEREAS,  the Company has  heretofore  issued,  in accordance  with the
provisions of the Mortgage, as heretofore  supplemented and amended,  bonds of a
series  entitled and  designated  First  Mortgage  Bonds, 2 3/4% Series due 1976
(hereinafter  called the bonds of the First Series),  in the aggregate principal
amount of Eight Million Five Hundred Thousand Dollars  ($8,500,000);  bonds of a
series  entitled and  designated  First  Mortgage  Bonds, 3 1/8% Series due 1977
(hereinafter  called the bonds of the Second Series), in the aggregate principal
amount of Two Million Five Hundred  Thousand  Dollars  ($2,500,000);  bonds of a
series  entitled  and  designated  First  Mortgage  Bonds,  3%  Series  due 1979
(hereinafter  called the bonds of the Third Series),  in the aggregate 
                                       2
<PAGE>
principal  amount  of Four  Million  Dollars  ($4,000,000);  bonds  of a  series
entitled  and  designated   First  Mortgage   Bonds,  2  3/4%  Series  due  1980
(hereinafter  called the bonds of the Fourth Series), in the aggregate principal
amount of Five  Million  Dollars  ($5,000,000);  bonds of a series  entitled and
designated First Mortgage Bonds, 2 7/8% Series due 1980 (hereinafter  called the
bonds of the Fifth  Series),  in the aggregate  principal  amount of Six Million
Dollars  ($6,000,000);  bonds of a series entitled and designated First Mortgage
Bonds,  3 1/2%  Series  due 1983  (hereinafter  called  the  bonds of the  Sixth
Series),  in the  aggregate  principal  amount of Fourteen  Million Five Hundred
Thousand Dollars ($14,500,000);  bonds of a series entitled and designated First
Mortgage Bonds, 3 1/2% Series due November 1, 1983 (hereinafter called the bonds
of the Seventh Series),  in the aggregate principal amount of Five Million Seven
Hundred Twenty-three Thousand Dollars  ($5,723,000);  bonds of a series entitled
and designated First Mortgage Bonds, 3 1/4% Series due 1984 (hereinafter  called
the bonds of the Eighth Series),  in the aggregate  principal  amount of Fifteen
Million Dollars  ($15,000,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  5 1/8%  Series due 1987  (hereinafter  called the bonds of the
Ninth Series),  in the aggregate  principal  amount of Fifteen  Million  Dollars
($15,000,000);  bonds of a series entitled and designated  First Mortgage Bonds,
4.70% Series due 1989 (hereinafter called the bonds of the Tenth Series), in the
aggregate principal amount of Twenty Million Dollars  ($20,000,000);  bonds of a
series  entitled and  designated  First  Mortgage  Bonds,  4.80% Series due 1991
(hereinafter  called  the  bonds  of the  Eleventh  Series),  in  the  aggregate
principal amount of Thirty-five Million Dollars ($35,000,000); bonds of a series
entitled and designated First Mortgage Bonds, 4.45% Series due 1992 (hereinafter
called the bonds of the Twelfth  Series),  in the aggregate  principal amount of
Twenty-five  Million  Dollars  ($25,000,000);  bonds  of a series  entitled  and
designated First Mortgage Bonds,  4.40% Series due 1992 (hereinafter  called the
bonds  of  the  Thirteenth   Series),  in  the  aggregate  principal  amount  of
Twenty-five  Million  Dollars  ($25,000,000);  bonds  of a series  entitled  and
designated First Mortgage Bonds,  4.50% Series due 1993 (hereinafter  called the
bonds of the Fourteenth  Series),  in the aggregate  principal amount of Fifteen
Million Dollars  ($15,000,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  6.25%  Series  due 1997  (hereinafter  called the bonds of the
Fifteenth  Series),  in the aggregate  principal  amount of Twenty-five  Million
Dollars ($25,000,000);  bonds of a series entitled and designated First Mortgage
Bonds,  8.50%  Series due 1975  (hereinafter  called the bonds of the  Sixteenth
Series),   in  the  aggregate   principal   amount  of  Thirty  Million  Dollars
($30,000,000);  bonds of a series entitled and designated  First Mortgage Bonds,
7.45% Series due 2002 (hereinafter called the bonds of the Seventeenth  Series),
in the aggregate principal amount of Sixty Million Dollars ($60,000,000);  bonds
of a series entitled and designated First Mortgage Bonds,  6.20% Series due 2004
(hereinafter  called  the  bonds of the  Eighteenth  Series),  in the  aggregate
principal  amount  of Fifty  Million  Dollars  ($50,000,000);  bonds of a series
entitled and designated First Mortgage Bonds, 9.50% Series due 1982 (hereinafter
called the bonds of the Nineteenth Series), in the aggregate principal amount of
One Hundred  Million  Dollars  ($100,000,000);  bonds of a series  entitled  and
designated First Mortgage Bonds,  9.80% Series due 1980 (hereinafter  called the
bonds  of  the  Twentieth  Series),   in  the  aggregate   principal  amount  of
Seventy-five  Million  Dollars  ($75,000,000);  bonds of a series  entitled  and
designated First Mortgage Bonds, 10.625% Series due 2000 (hereinafter called the
bonds  of  the  Twenty-first  Series),  in the  aggregate  principal  amount  of
Seventy-five  Million  Dollars  ($75,000,000);  bonds of a series  entitled  and
designated First Mortgage Bonds, 6.45% Series A due 2007 (hereinafter called the
bonds  of the  Twenty-second  Series),  in the  aggregate  principal  amount  of
Thirteen  Million  Dollars  ($13,000,000);   bonds  of  a  series  entitled  and
designated First Mortgage Bonds, 6.45% Series B due 2007 (hereinafter called the
bonds of the Twenty-third  Series),  in the aggregate principal amount of Thirty
Million Dollars  ($30,000,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  6%  Series A due 2008  (hereinafter  called  the  bonds of the
Twenty-fourth  Series), in the aggregate principal amount of Thirty-four Million
Dollars ($34,000,000);  bonds of a series entitled and designated First Mortgage
Bonds,  9.95% Series due 2004 (hereinafter  called the bonds of the Twenty-fifth
Series),  in the aggregate  principal  amount of  Seventy-five  Million  Dollars
($75,000,000);  bonds of a series entitled and designated  First Mortgage Bonds,
12 1/8%  Series  due 2009  (hereinafter  called  the  bonds of the  Twenty-sixth
Series),  in the aggregate  principal  amount of  Seventy-five  Million  Dollars
($75,000,000);  bonds of a series entitled and designated  First Mortgage Bonds,
12 7/8%  Series due 2000  (hereinafter  called  the bonds of the  Twenty-seventh
Series),  in the aggregate  principal amount of One Hundred  Eighty-five Million
Dollars ($185,000,000); bonds of a series entitled and designated First Mortgage
Bonds,  10  3/8%  Series  due  1985   (hereinafter   called  the  bonds  of  the
Twenty-eighth  Series),  in the aggregate  principal amount of Sixty Million Two
Hundred Fifty Thousand  Dollars  ($60,250,000);  bonds of a series  entitled and
designated  First Mortgage Bonds,  16% Series due 1992  (hereinafter  called the
bonds of the  Twenty-ninth  Series),  in the aggregate  principal  amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated First Mortgage Bonds, 12 3/4% Series due 2013 (hereinafter called the
bonds of the Thirtieth Series), in the aggregate principal amount of One Hundred
Million Dollars ($100,000,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  13 1/2% Series due 2013  (hereinafter  called the bonds of the
Thirty- first Series),  in the aggregate principal amount of One Hundred Million
Dollars ($100,000,000); bonds of a series entitled and designated First Mortgage
Bonds, 15% Series due 1994  (hereinafter  called the bonds of the  Thirty-second
Series),  in the  aggregate  principal  amount of One  Hundred  Million  Dollars
($100,000,000);  bonds of a series entitled and designated First Mortgage Bonds,
12% Series due 1995 (hereinafter  called the bonds of the 
                                       3
<PAGE>
Thirty-third   Series),  in  the  aggregate  principal  amount  of  One  Hundred
Twenty-five  Million  Dollars  ($125,000,000);  bonds of a series  entitled  and
designated First Mortgage Bonds, 13 1/4% Series due 2007 (hereinafter called the
bonds of the Thirty-fourth  Series),  in the aggregate principal amount of Fifty
Million Dollars  ($50,000,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  11 1/2% Series due 2015  (hereinafter  called the bonds of the
Thirty-fifth  Series),  in the aggregate  principal  amount of One Hundred Fifty
Million Dollars ($150,000,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  11 1/2% Series due  November 1, 2015  (hereinafter  called the
bonds of the  Thirty-sixth  Series),  in the aggregate  principal  amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated  First Mortgage Bonds,  11% Series due 2016  (hereinafter  called the
bonds of the Thirty-seventh  Series),  in the aggregate  principal amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated First Mortgage Bonds, 9 1/4% Series due 1996 (hereinafter  called the
bonds of the  Thirty-eighth  Series),  in the aggregate  principal amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated  First Mortgage  Bonds,  9% Series due 1996  (hereinafter  called the
bonds of the  Thirty-ninth  Series),  in the aggregate  principal  amount of One
Hundred Twenty-five Million Dollars  ($125,000,000);  bonds of a series entitled
and designated First Mortgage Bonds, 9% Series due 2017 (hereinafter  called the
bonds of the Fortieth Series),  in the aggregate principal amount of One Hundred
Fifty Million Dollars ($150,000,000);  bonds of a series entitled and designated
First Mortgage  Bonds, 9 7/8% Series due 1997  (hereinafter  called the bonds of
the  Forty-first  Series),  in the  aggregate  principal  amount of One  Hundred
Twenty-five  Million  Dollars  ($125,000,000);  bonds of a series  entitled  and
designated First Mortgage Bonds, 10 3/4% Series due 2017 (hereinafter called the
bonds of the  Forty-second  Series),  in the aggregate  principal  amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated First Mortgage Bonds, 10 3/4% Series due 2019 (hereinafter called the
bonds of the  Forty-third  Series),  in the  aggregate  principal  amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated First Mortgage Bonds, 10 1/4% Series due 2000 (hereinafter called the
bonds of the  Forty-fourth  Series),  in the aggregate  principal  amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated First Mortgage Bonds, 10 1/4% Series due 2020 (hereinafter called the
bonds of the  Forty-fifth  Series),  in the  aggregate  principal  amount of One
Hundred Twenty-five Million Dollars  ($125,000,000);  bonds of a series entitled
and designated First Mortgage Bonds, 9 1/2% Series due 2021 (hereinafter  called
the bonds of the Forty-sixth  Series),  in the aggregate principal amount of One
Hundred  Million  Dollars  ($100,000,000);   bonds  of  a  series  entitled  and
designated  First Mortgage  Bonds,  9% Series due 2021  (hereinafter  called the
bonds of the  Forty-seventh  Series),  in the aggregate  principal amount of One
Hundred Fifty Million  Dollars  ($150,000,000);  bonds of a series  entitled and
designated  First  Mortgage  Bonds,  7 1/8%  Series due 1997,  in the  aggregate
principal amount of One Hundred Fifty Million Dollars ($150,000,000),  and bonds
of a series  entitled and  designated  First  Mortgage  Bonds, 8 3/4% Series due
2024,  in the aggregate  principal  amount of One Hundred  Seventy-five  Million
Dollars  ($175,000,000)  (hereinafter  collectively  called  the  bonds  of  the
Forty-eighth  Series);  bonds of a series entitled and designated First Mortgage
Bonds, 7 5/8% Series due 1998, in the aggregate  principal amount of One Hundred
Million  Dollars  ($100,000,000),  and bonds of a series entitled and designated
First Mortgage Bonds, 8 1/8% Series due 2002, in the aggregate  principal amount
of  One  Hundred   Twenty-five  Million  Dollars   ($125,000,000)   (hereinafter
collectively  called  the bonds of the  Forty-ninth  Series);  bonds of a series
entitled  and  designated   First  Mortgage   Bonds,  7  5/8%  Series  due  1999
(hereinafter  called  the  bonds  of the  Fiftieth  Series),  in  the  aggregate
principal  amount of One  Hundred  Million  Dollars  ($100,000,000);  bonds of a
series  entitled  and  designated  First  Mortgage  Bonds,  8%  Series  due 2025
(hereinafter  called  the bonds of the  Fifty-first  Series),  in the  aggregate
principal amount of One Hundred Fifty Million Dollars ($150,000,000); bonds of a
series  entitled and  designated  First  Mortgage  Bonds, 7 1/4% Series due 2023
(hereinafter  called the bonds of the  Fifty-second  Series),  in the  aggregate
principal  amount of One  Hundred  Million  Dollars  ($100,000,000);  bonds of a
series  entitled and  designated  First  Mortgage  
                                       5
<PAGE>
Bonds,  5 7/8%  Series due 2028  (hereinafter  called  bonds of the  Fifty-third
Series), in the aggregate principal amount of Twelve Million Eight Hundred Fifty
Thousand Dollars ($12,850,000);  bonds of a series entitled and designated First
Mortgage  Bonds,  5 7/8%  Series  due  2028  (hereinafter  called  bonds  of the
Fifty-fourth Series), in the aggregate principal amount of One Hundred Forty-one
Million One Hundred Fifty  Thousand  Dollars  ($141,150,000);  bonds of a series
entitled  and  designated   First  Mortgage   Bonds,  5  1/2%  Series  due  2028
(hereinafter  called  bonds  of the  Fifty-  fifth  Series),  in  the  aggregate
principal amount of Twenty-five Million Dollars ($25,000,000); bonds of a series
entitled  and  designated   First  Mortgage   Bonds,  5  3/4%  Series  due  2000
(hereinafter  called bonds of the Fifty-sixth Series) in the aggregate principal
amount of One  Hundred  Million  Dollars  ($100,000,000);  and bonds of a series
entitled  and  designated   First  Mortgage   Bonds,  6  5/8%  Series  due  2004
(hereinafter  called  bonds  of  the  Fifty-seventh  Series)  in  the  aggregate
principal amount of One Hundred Million Dollars ($100,000,000); and

         WHEREAS,  said The  Bank of New  York,  by an  instrument  in  writing,
effective on the opening of business on September 29, 1995, succeeded to Bank of
America  National  Trust and Savings  Association as Trustee under the Mortgage;
and,  pursuant  to  Section  104 of the  Mortgage,  The  Bank of New York is the
successor Trustee under the Mortgage; and

         WHEREAS,  Section  8 of the  Mortgage  provides  that  the form of each
series of bonds (other than bonds of the First Series) issued  thereunder  shall
be  established  by Resolution of the Board of Directors of the Company and that
the form of each  series,  as  established  by said  Board of  Directors,  shall
specify the descriptive title of the bonds and various other terms thereof,  and
may also contain such  provisions  not  inconsistent  with the provisions of the
Mortgage as the Board of Directors may, in its discretion,  cause to be inserted
therein  expressing  or  referring to the terms and  conditions  upon which such
bonds are to be issued and/or secured under the Mortgage; and

         WHEREAS, Section 120 of the Mortgage provides, among other things, that
any power,  privilege or right expressly or impliedly  reserved to or in any way
conferred upon the Company by any provision of the Mortgage, whether such power,
privilege or right is in any way restricted or is unrestricted,  may be in whole
or in part waived or surrendered or subjected to any  restriction if at the time
unrestricted or to additional restriction if already restricted, and the Company
may enter  into any  further  covenants,  limitations  or  restrictions  for the
benefit of any one or more series of bonds issued thereunder, or the Company may
cure any ambiguity contained therein, or in any supplemental  indenture,  or may
establish the terms and  provisions of any series of bonds other than said First
Series,  by an instrument in writing executed and acknowledged by the Company in
such  manner as would be  necessary  to entitle a  conveyance  of real estate to
record in all of the  states in which any  property  at the time  subject to the
Lien of the Mortgage shall be situated; and

         WHEREAS,  the Company now desires to create a new series of bonds to be
issued under and pursuant to the Mortgage in accordance  with the  provisions of
Article VI thereof,  and to add to its covenants and agreements contained in the
Mortgage,  as heretofore  supplemented and amended,  certain other covenants and
agreements  to be observed by it and to alter and amend in certain  respects the
covenants and provisions contained in the Mortgage,  as heretofore  supplemented
and amended; and

         WHEREAS,  the Company has agreed to issue One Hundred  Million  Dollars
($100,000,000) in aggregate principal amount of its 6-3/4% Senior Notes Due 2006
(the "Senior Notes Due 2006")  pursuant to the provisions of the Indenture dated
as of November 15, 1996 (the "Senior Note  Indenture"),  between the Company and
The Bank of New York, as trustee  (said  trustee or any successor  trustee under
the Senior Note  Indenture  being  hereinafter  referred to as the "Senior  Note
Trustee"),  as supplemented  by the First  
                                       5
<PAGE>
Supplemental  Indenture,  dated as of November 15, 1996, between the Company and
the Senior Note Trustee; and

         WHEREAS, in order to secure the Company's  obligation to pay principal,
premium,  if any, and interest on the Senior Notes Due 2006 prior to the Release
Date (as hereinafter  defined),  the Company desires to provide for the issuance
under  the  Mortgage  to the  Senior  Note  Trustee  of a new  series  of  bonds
designated "First Mortgage Bonds, Senior Note Series A," having the same rate of
interest, interest payment dates, maturity date and redemption provisions and in
the same aggregate principal amount as the Senior Notes Due 2006; and

         WHEREAS, the execution and delivery by the Company of this Fifty-fourth
Supplemental  Indenture,  and the terms of the bonds of the Fifty-eighth  Series
hereinafter  referred to, have been duly authorized by the Board of Directors of
the Company by appropriate Resolutions of said Board of Directors;

         NOW THEREFORE,  THIS INDENTURE WITNESSETH:  That Arizona Public Service
Company,  in  consideration of the premises and of One Dollar to it duly paid by
the  Trustee at or before the  ensealing  and  delivery of these  presents,  the
receipt whereof is hereby acknowledged,  and in further evidence of assurance of
the estate,  title and rights of the Trustee and in order  further to secure the
payment of both the principal of and interest and premium,  if any, on the bonds
from time to time  heretofore,  herewith or hereafter issued under the Mortgage,
according to their tenor and effect,  and the  performance of all the provisions
of  the  Mortgage  (including  any  instruments  supplemental  thereto  and  any
modifications  made  as in the  Mortgage  provided)  and of said  bonds,  hereby
grants,  bargains,  sells, releases,  conveys,  assigns,  transfers,  mortgages,
pledges,  sets over and confirms (subject,  however, to Excepted Encumbrances as
defined  in  Section 6 of the  Mortgage)  unto The Bank of New York,  as Trustee
under the Mortgage,  and to its  successor or  successors in said trust,  and to
said Trustee and its successors and assigns  forever,  all the properties of the
Company  described  in the  Mortgage,  as  heretofore  supplemented  and amended
(except any properties  which have been released from the Lien of the Mortgage),
and all the properties specifically described in Article IV hereof.

         Also all other  property,  real,  personal  and  mixed,  of the kind or
nature  specifically  mentioned  in  Article  IV hereof or of any other  kind or
nature  (except any herein or in the Mortgage,  as heretofore  supplemented  and
amended,  expressly  excepted and except any which may not lawfully be mortgaged
or pledged hereunder), now owned or, subject to the provisions of subsection (I)
of Section 87 of the Mortgage,  hereafter  acquired by the Company (by purchase,
consolidation, merger, donation, construction, erection or in any other way) and
wheresoever situated, including (without in anywise limiting or impairing by the
enumeration  of the same the scope and intent of the foregoing or of any general
description  contained in this Fifty-fourth  Supplemental  Indenture) all lands,
power  sites,   flowage   rights,   water   rights,   water   locations,   water
appropriations,  ditches, flumes, reservoirs, reservoir sites, canals, raceways,
dams,  dam sites,  aqueducts,  and all other rights or means for  appropriating,
conveying,  storing and supplying water; all rights of way and roads; all plants
for the generation of electricity by steam,  water and/or other power; all power
houses,  gas plants,  street  lighting  systems,  standards and other  equipment
incidental thereto,  telephone,  radio and television systems,  air-conditioning
systems and equipment incidental thereto, water works, water systems, steam heat
and hot water plants,  substations,  lines, service and supply systems, bridges,
culverts, tracks, ice or refrigeration plants and equipment,  offices, buildings
and other structures and equipment  thereof;  all machinery,  engines,  boilers,
dynamos,  electric, gas and other machines,  regulators,  meters,  transformers,
generators, motors, electrical, gas and mechanical appliances, conduits, cables,
water,  steam heat,  gas or other  pipes,  gas mains and pipes,  service  pipes,
fittings,  valves and connections,  pole and transmission lines, wires,  cables,
tools, 
                                       6
<PAGE>
implements,  apparatus,  furniture and  chattels;  all  franchises,  consents or
permits;  all lines for the transmission  and distribution of electric  current,
gas, steam heat or water for any purpose including towers, poles, wires, cables,
pipes,  conduits,  ducts and all apparatus for use in connection therewith;  all
real  estate,  lands,  easements,  servitudes,  licenses,  permits,  franchises,
privileges,  rights of way and other  rights in or relating to public or private
property,  real or personal,  or the  occupancy of such  property and (except as
herein or in the Mortgage,  as heretofore  supplemented  and amended,  expressly
excepted)  all the  right,  title  and  interest  the  Company  may now  have or
hereafter  acquire  in and to any  and  all  property  of  any  kind  or  nature
appertaining  to and/or used and/or  occupied  and/or enjoyed in connection with
any property  hereinbefore or in the Mortgage,  as heretofore  supplemented  and
amended, described.

         TOGETHER   WITH  all  and   singular  the   tenements,   hereditaments,
prescriptions, servitudes and appurtenances belonging or in anywise appertaining
to the  aforementioned  property or any part  thereof,  with the  reversion  and
reversions,  remainder and  remainders and (subject to the provisions of Section
57 of the  Mortgage)  the tolls,  rents,  revenues,  issues,  earnings,  income,
product and profits  thereof,  and all the estate,  right,  title,  interest and
claim whatsoever,  at law as well as in equity, which the Company now has or may
hereafter acquire in and to the aforementioned property and franchises and every
part and parcel thereof.

         IT IS HEREBY AGREED by the Company that,  subject to the  provisions of
subsection (I) of Section 87 of the Mortgage and to the extent permitted by law,
all the property,  rights and  franchises  acquired by the Company (by purchase,
consolidation,  merger,  donation,  construction,  erection or in any other way)
after the date  hereof,  except any  herein or in the  Mortgage,  as  heretofore
supplemented and amended,  expressly excepted, shall be and are as fully granted
and conveyed hereby and as fully embraced within the lien hereof and the Lien of
the Mortgage as if such property,  rights and  franchises  were now owned by the
Company and were specifically described herein and conveyed hereby.

         PROVIDED  that the  following are not and are not intended to be now or
hereafter granted, bargained, sold, released, conveyed,  assigned,  transferred,
mortgaged,  pledged,  set over or confirmed  hereunder and are hereby  expressly
excepted from the lien and operation of this Fifty-fourth Supplemental Indenture
and from the Lien and  operation  of the  Mortgage,  viz.:  (1) cash,  shares of
stock,  bonds,  notes and other  obligations and other  securities not hereafter
specifically pledged,  paid, deposited,  delivered or held under the Mortgage or
covenanted  so to  be;  (2)  merchandise,  equipment,  apparatus,  materials  or
supplies held for the purpose of sale or other  disposition  in the usual course
of business;  fuel,  oil and similar  materials  and supplies  consumable in the
operation  of any of the  properties  of  the  Company;  construction  equipment
acquired for  temporary  use; all aircraft,  tractors,  rolling  stock,  trolley
coaches, buses, motor coaches, automobiles,  motor trucks and other vehicles and
materials  and supplies held for the purpose of repairing or replacing (in whole
or part) any of the same; all timber, minerals, mineral rights and royalties and
all  Natural  Gas and Oil  Production  Property,  as defined in Section 4 of the
Mortgage;  (3) bills,  notes and  accounts  receivable,  judgments,  demands and
choses in  action,  and all  contracts,  leases  and  operating  agreements  not
specifically pledged under the Mortgage or covenanted so to be; (4) the last day
of the term of any lease or leasehold which may be or become subject to the Lien
of the Mortgage;  (5) electric  energy,  gas, steam,  ice and other materials or
products generated, manufactured, produced, purchased or acquired by the Company
for sale,  distribution or use in the ordinary  course of its business;  and (6)
the  Company's  franchise  to be a  corporation;  provided,  however,  that  the
property  and  rights  expressly  excepted  from the Lien and  operation  of the
Mortgage in the above subdivisions (2) and (3) shall (to the extent permitted by
law) cease to be so excepted in the event and as of the date that the Trustee or
a receiver or trustee shall enter 
                                       7
<PAGE>
upon and take  possession of the  Mortgaged  and Pledged  Property in the manner
provided  in  Article  XIII of the  Mortgage  by reason of the  occurrence  of a
Default as defined in Section 65 thereof.

         TO HAVE AND TO HOLD all such  properties,  real,  personal  and  mixed,
granted, bargained, sold, released, conveyed, assigned, transferred,  mortgaged,
pledged,  set over or confirmed by the Company as  aforesaid,  or intended so to
be,  unto The Bank of New York,  the  Trustee,  and its  successors  and assigns
forever.

         IN TRUST  NEVERTHELESS,  for the same purposes and upon the same terms,
trusts and conditions and subject to and with the same provisos and covenants as
are set forth in the Mortgage, as supplemented and amended.

         AND IT IS  HEREBY  COVENANTED  by  the  Company  that  all  the  terms,
conditions,  provisos,  covenants and provisions  contained in the Mortgage,  as
supplemented  and amended,  shall affect and apply to the property  hereinbefore
described and conveyed and to the estate, rights,  obligations and duties of the
Company and the Trustee and the  beneficiaries of the trust with respect to said
property,  and to the Trustee and its  successors as Trustee of said property in
the same manner and with the same effect as if the said  property had been owned
by the  Company  at the  time of the  execution  of the  Mortgage  and had  been
specifically  and at length  described  in and  conveyed to said  Trustee by the
Mortgage as a part of the property therein stated to be conveyed.

         The Company  further  covenants  and agrees to and with the Trustee and
its successors in said trust under the Mortgage, as follows:


                                   ARTICLE I.
                          FIFTY-EIGHTH SERIES OF BONDS.

         SECTION 1. There shall be a series of bonds designated  "First Mortgage
Bonds,  Senior  Note  Series  A"  (hereinafter  sometimes  referred  to  as  the
"Fifty-eighth  Series" or the  "Senior  Note  Series A  Bonds"),  limited to the
aggregate  principal amount of  $100,000,000,  each of which shall also bear the
descriptive  title First  Mortgage  Bond,  and the form thereof,  which shall be
established  by  Resolution  of the Board of  Directors  of the  Company,  shall
contain suitable provisions with respect to the matters hereinafter specified in
this Supplemental Indenture.  Bonds of the Fifty-eighth Series shall be dated as
provided in Section 10 of the Mortgage;  shall mature, subject to the provisions
for prior  redemption  hereinafter  set forth,  on November 15,  2006;  shall be
issued as fully registered bonds in denominations of One Thousand Dollars or any
integral  multiple  thereof,  and shall be  registered in the name of the Senior
Note  Trustee;  and shall bear  interest from November 15, 1996 or from the most
recent Interest  Payment Date (as defined below) to which interest has been paid
at the rate of 6-3/4% per annum  (calculated  on the basis of a 360-day  year of
twelve 30-day  months),  payable on May 15 and November 15 of each year (each an
"Interest  Payment  Date"),  commencing May 15, 1997, to the holders  thereof of
record  on the May 1 or  November  1, as the case may be,  next  preceding  such
Interest  Payment Date (subject to the  provisions of Section 12 of the Mortgage
concerning legal holidays and bank closings),  and the principal of and interest
on, and premium or other amounts,  if any, payable upon redemption of, each said
bond to be  payable at the  office or agency of the  Company  in the  Borough of
Manhattan,  The City of New York,  New York,  in such  coin or  currency  of the
United States of America as, at the time of payment,  is legal tender for public
and private debts;  provided,  however,  that payment of interest may be made at
the option of the Company by check mailed to the address of the person  entitled
thereto as such address shall appear on the registration books of the Company.
                                       8
<PAGE>
         The  Company's   obligation  to  make  payments  with  respect  to  the
principal,  premium  and/or  interest on the Senior Note Series A Bonds shall be
fully or partially,  as the case may be,  satisfied and discharged to the extent
that, at the time that any such payment shall be due, the  corresponding  amount
of principal of,  premium,  if any, and/or interest then due on the Senior Notes
Due 2006 shall have been fully or partially  paid,  as the case may be, or there
shall have been deposited with the Senior Note Trustee  pursuant to Section 501,
Section  1103,  Section  1205 or Article  Fourteen of the Senior Note  Indenture
trust funds  sufficient  under the  provisions  of said  Sections and Article to
fully or  partially  pay,  as the  case  may be,  the  corresponding  amount  of
principal,  premium,  if any,  and/or  interest then due on the Senior Notes Due
2006.

         SECTION 2. Upon  payment of the  principal  of,  premium,  if any,  and
interest  due on the  Senior  Notes Due 2006,  whether at  maturity  or prior to
maturity by redemption or otherwise,  or upon provision for the payment  thereof
having been made in  accordance  with  Section 501 or Section 1402 of the Senior
Note  Indenture,  Senior Note Series A Bonds in a principal  amount equal to the
principal  amount of Senior  Notes Due 2006 so paid or for which such  provision
for payment has been made shall be deemed fully paid,  satisfied and  discharged
and the  obligations  of the Company  thereunder  shall be  terminated  and such
Senior Note Series A Bonds shall be surrendered to and cancelled by the Trustee.
From and after such date as all bonds  issued  under the  Mortgage  (other  than
Senior  Note First  Mortgage  Bonds,  as such term is defined in the Senior Note
Indenture)  have been retired  through  payment,  redemption,  or otherwise  at,
before or after maturity thereof (the "Release Date"),  the Senior Note Series A
Bonds shall be deemed fully paid, satisfied and discharged and the obligation of
the Company thereunder shall be terminated. On the Release Date, the Senior Note
Series A Bonds shall be surrendered to and cancelled by the Trustee.

         SECTION  3. At the  option of the  registered  owner,  any bonds of the
Fifty-eighth Series, upon surrender thereof, for cancellation,  at the office or
agency of the Company in the  Borough of  Manhattan,  The City of New York,  New
York, together with a written instrument of transfer, if required by the Company
or by  the  Trustee,  duly  executed  by the  registered  owner  or by his  duly
authorized  attorney,  shall  (subject  to the  provisions  of Section 12 of the
Mortgage) be  exchangeable  for a like  aggregate  principal  amount of bonds in
registered  form of the same series of other  authorized  denominations  without
payment of any sum other than taxes or other governmental charges.

         Bonds of the Fifty-eighth Series shall be transferable  (subject to the
provisions  of  Section  12 of the  Mortgage)  at said  office  or agency of the
Company  without  payment  of any sum  other  than  taxes or other  governmental
charges.

                                   ARTICLE II.
                    REDEMPTION OF SENIOR NOTE SERIES A BONDS

         The Senior Note Series A Bonds shall be redeemed,  in whole or in part,
from  time to time,  on the date on which a  corresponding  principal  amount of
Senior Notes Due 2006 are redeemed as provided in the Senior Note Indenture upon
the Senior Note Trustee's  notification of the Trustee of such redemption,  at a
redemption  price equal to the  redemption  price of such Senior  Notes Due 2006
being so  redeemed.  Any such  notice  shall be received by the Trustee no later
than 5 days prior to any  redemption  date fixed for the  Senior  Note  Series A
Bonds to be redeemed and shall specify the principal  amount of such Senior Note
Series A Bonds to be redeemed,  the  redemption  date, and the amount of accrued
interest and premium,  if any, to be paid thereon.  The Company shall deposit in
trust with the Trustee on the redemption  date an amount of money  sufficient to
pay the principal amount including  accrued  interest,  if any, and premium,  if
any, on the Senior Note Series A Bonds to be redeemed.  Upon presentation to the
Trustee  of any  Senior  Note  Series A Bonds by the  Senior  Note  Trustee  for
payment, such Senior Note Series A Bonds so presented shall be redeemed and paid
in full.
                                       9
<PAGE>
         In the event the principal of all Senior Notes Due 2006 is declared due
and payable or becomes  automatically due and payable pursuant to Section 602 of
the Senior Note Indenture,  upon the filing with the Trustee of a written demand
for the  acceleration  of the payment of  principal  of all Senior Note Series A
Bonds,  the payment of  principal on all Senior Note Series A Bonds shall become
immediately  due and payable and the  Trustee  shall  provide to the Senior Note
Trustee an irrevocable,  valid and unconditional  notice of the acceleeration of
all Senior Note Series A Bonds.

         Redemption of the Senior Note Series A Bonds shall be effected, without
further  notice by the Company to the Trustee,  by the payment by the Company of
the  applicable  redemption  price  specified  in this  Article  II at the place
specified for payment of principal of and interest on such bonds.

         The Senior  Note  Series A Bonds will not be subject to  prepayment  or
redemption  prior to maturity  except as provided  herein,  notwithstanding  the
provisions  of Section 39 or Section 64 of the  Mortgage,  or with  "Proceeds of
Released Property," as defined in the Mortgage.

         The Senior Note Series A Bonds will not be subject to any sinking fund.

         The Company  covenants and agrees that,  prior to Release Date, it will
not take any action  (except as required by this  Article II hereof)  that would
cause the outstanding  principal  amount of the Senior Note Series A Bonds to be
less than the then outstanding principal amount of the Senior Notes Due 2006.


                                  ARTICLE III.
             REPLACEMENT FUND PROVISIONS -- OTHER RELATED PROVISIONS
             OF THE MORTGAGE -- DIVIDEND COVENANT -- RECORD DATES --
                              AUTHENTICATING AGENT.

         SECTION 4. The Company  covenants  that the provisions of Section 39 of
the  Mortgage,  which were to remain in effect so long as any bonds of the First
Series  remained  Outstanding,  shall remain in full force and effect so long as
any bonds of the Thirty-fourth,  Forty-third, Forty-fourth,  Forty-fifth, Forth-
sixth, Forty-seventh,  Forty-eighth,  Forty-ninth, Fiftieth, Fifty-first, Fifty-
second, Fifty-third, Fifty-fourth,  Fifty-fifth, Fifty-sixth , Fifty-seventh, or
Fifty-eighth Series are Outstanding.

         Clause  (d)  of  subsection  (II)  of  Section  4 of the  Mortgage,  as
heretofore amended,  clause (6) and clause (e) of Section 5 of the Mortgage,  as
heretofore amended,  and Section 29 of the Mortgage,  as heretofore amended, are
hereby further amended by inserting therein the words "and Fifty-eighth  Series"
                                       10
<PAGE>
after the words  "bonds of the First  Series and Second  Series and Third Series
and Fourth  Series  and Fifth  Series and Sixth  Series and  Seventh  Series and
Eighth Series and Ninth Series and Tenth Series and Eleventh  Series and Twelfth
Series and  Thirteenth  Series and  Fourteenth  Series and Fifteenth  Series and
Sixteenth  Series and  Seventeenth  Series and Eighteenth  Series and Nineteenth
Series and Twentieth Series and Twenty-first Series and Twenty-second Series and
Twenty-third  Series and  Twenty-fourth  Series  and  Twenty-  fifth  Series and
Twenty-sixth  Series and  Twenty-seventh  Series and Twenty-  eighth  Series and
Twenty-ninth   Series  and  Thirtieth   Series  and   Thirty-first   Series  and
Thirty-second  Series  and  Thirty-third  Series  and  Thirty-fourth  Series and
Thirty-fifth  Series  and  Thirty-sixth  Series  and  Thirty-seventh  Series and
Thirty-eighth Series and Thirty-ninth Series and Fortieth Series and Forty-first
Series and Forty-second  Series and Forty-third  Series and Forty-fourth  Series
and  Forty-fifth  Series and  Forty-sixth  Series and Forty-  seventh Series and
Forty-eighth  Series and Forty-ninth  Series and Fiftieth Series and Fifty-first
Series and Fifty-second  Series and Fifty-third  Series and Fifty-fourth  Series
and Fifty-fifth  Series and Fifty-sixth  Series and  Fifty-seventh  Series" each
time such words occur therein.

         Clause  (e)  of  subsection  (II)  of  Section  4 of the  Mortgage,  as
heretofore amended, is hereby further amended by the insertion therein after the
words "and Fifty-seventh" the words "and Fifty-eighth."

         The  last  paragraph  of  Section  12 of the  Mortgage,  as  heretofore
amended,  the last  paragraph  of  Section  17 of the  Mortgage,  as  heretofore
amended,  and the last  paragraph of Section 110 of the Mortgage,  as heretofore
amended,  are hereby amended by inserting therein the words "or the Fifty-eighth
Series"  after the words  "Fifty-seventh  Series"  each  time such  words  occur
therein..


                                   ARTICLE IV.
                            MISCELLANEOUS PROVISIONS.

         SECTION  5. The terms  defined in the  Mortgage,  as  supplemented  and
amended,  shall, for all purposes of this Fifty-fourth  Supplemental  Indenture,
have the meanings specified therein,  except that the term "Mortgage" shall mean
only the original Mortgage and Deed of Trust, dated as of July 1, 1946; the term
"Mortgage,  as heretofore  supplemented and amended" shall mean the Mortgage, as
supplemented  and  amended  by  the  First  through   Fifty-third   Supplemental
Indentures hereinabove referred to; and the term "Mortgage,  as supplemented and
amended,"  shall mean the  Mortgage,  as  supplemented  and amended by the First
through  Fifty-third  Supplemental  Indentures  hereinabove  referred  to and as
supplemented  and amended by this  Fifty-fourth  Supplemental  Indenture and any
future supplemental indentures.

         SECTION 6. The  Trustee  hereby  accepts  the trusts  herein  declared,
provided,  created,  supplemented or amended and agrees to perform the same upon
the terms and conditions herein and in the Mortgage, as heretofore  supplemented
and amended, set forth and upon the following terms and conditions:

         The Trustee shall not be responsible in any manner whatsoever for or in
respect  of the  validity  or  sufficiency  of  this  Fifty-fourth  Supplemental
Indenture or for or in respect of the recitals  contained  herein,  all of which
recitals  are made by the Company  solely.  In general,  each and every term and
condition contained in Article XVII of the Mortgage shall apply to and form part
of this Fifty-fourth Supplemental Indenture with the same force and effect as if
the same were  herein  set forth in full with  such  omissions,  variations  and
insertions,  if any,  as may be  appropriate  to make  the same  conform  to the
provisions of this Fifty-fourth Supplemental Indenture.
                                       11
<PAGE>
         SECTION 7. Whenever in this Fifty-fourth  Supplemental Indenture either
of the  parties  hereto is named or  referred  to,  this  shall,  subject to the
provisions  of Articles XVI and XVII of the  Mortgage,  be deemed to include the
successors  and assigns of such party,  and all the covenants and  agreements in
this  Fifty-fourth  Supplemental  Indenture  contained  by or on  behalf  of the
Company or by or on behalf of the Trustee shall, subject as aforesaid,  bind and
inure to the  respective  benefits of the  respective  successors and assigns of
such parties, whether so expressed or not.

         SECTION  8.  Nothing  in  this  Fifty-fourth   Supplemental  Indenture,
expressed or implied,  is intended or shall be  construed to confer upon,  or to
give to, any person, firm or corporation,  other than the parties hereto and the
holders of the bonds Outstanding under the Mortgage,  any right, remedy or claim
under or by reason of this Fifty-fourth  Supplemental Indenture or any covenant,
condition,  stipulation,  promise or agreement  hereof,  and all the  covenants,
conditions,   stipulations,   promises  and  agreements  in  this   Fifty-fourth
Supplemental Indenture contained by or on behalf of the Company shall be for the
sole and exclusive benefit of the parties hereto and of the holders of the bonds
Outstanding under the Mortgage.

         SECTION 9. This  Fifty-fourth  Supplemental  Indenture  may be executed
simultaneously in several  counterparts,  each of which shall be an original and
all of which shall constitute but one and the same instrument.


                                   ARTICLE V.
                        SPECIFIC DESCRIPTION OF PROPERTY.

         SECTION 10.  CERTAIN REAL PROPERTY LOCATED IN:

                                 MARICOPA COUNTY

                                    Arrowhead

THAT CERTAIN  PARCEL OF LAND  situated in the  Southeast  quarter of Section 23,
Township 4 north,  Range 1 East of the Gila and Salt  River  Base and  Meridian,
Maricopa County, Arizona, being more particularly described as follows:

COMMENCING at the D.L.M.  Brass Cap that marks the South Quarter  corner of said
Section 23:
THENCE North 89 degrees, 58 minutes,  00 seconds,  East, along the South line of
said Section 23, a distance of 490.00 feet: 
THENCE North 0 degrees, 02 minutes,  29 seconds,  West a distance of 70.00 feet,
to the  Southwesterly  corner  of said  parcel  of land  and the  TRUE  POINT OF
BEGINNING.
THENCE  continuing North 0 degrees,  02 minutes,  29 seconds West, a distance of
250.00 feet:
THENCE North 89 degrees, 58 minutes, 00 seconds, East a distance of 250.00 feet:
THENCE South 0 degrees, 02 minutes, 29 seconds, East a distance of 250.00 feet:
THENCE South 89 degrees, 58 minutes, 00 seconds, West a distance of 250.00 feet,
and to the TRUE POINT OF BEGINNING

                    Covenant Regarding Right Of First Refusal

                Grantee  agrees that Grantor shall have a right of first refusal
for the  subject  property  should  Grantee  ever  decide  it will  not need the
property for its stated  purpose for the location of an electrical
                                       12
<PAGE>
distribution substation:  Provided however, that the term of this right of first
refusal  shall be  effective  for a period  of five (5)  years  from the date of
recordation of this deed (the date of close of escrow), all as set forth in that
certain addendum to escrow instructions dated October 13, 1994, Lawyers Title of
Arizona, Inc., Escrow No. 352361,  executed by Grantor and Grantee as Seller and
Buyer respectively.

                                  NAVAJO COUNTY

                      Cholla Generating Station - Met Tower

PARCEL ONE:
- -----------

THAT CERTAIN  PARCEL OF LAND  situated in the  Northwest  quarter of Section 16,
Township 18 North,  Range 19 East of the Gila and Salt River Base and  Meridian,
Navajo County, Arizona, being more particularly described as follows:

COMMENCING  at the 1 inch  iron pipe that  marks  the  Northeast  corner of said
Section 16, from whence the  Southeast  corner of said Section 16 bears south 00
degrees 11 minutes 36 seconds East, 5302.45 feet distant.
         Thence  South 56  degrees 53  minutes  48  seconds  West a distance  of
3249.26  feet to a 3/4 inch  Rebar  tagged  L.S.  16292  and the  TRUE  POINT OF
BEGINNING.
         Thence  North 02 degrees 36 minutes 10 seconds  East a distance  of 150
feet to a 3/4 inch Rebar tagged L.S. 16292.
         Thence  North 87 degrees 23  minutes 50 seconds  West a distance  of 60
feet to a 3/4 inch Rebar tagged L.S. 16292.
         Thence  South 02 degrees 36 minutes 10 seconds  West a distance  of 150
feet to a 3/4 inch Rebar tagged L.S. 16292.
         Thence  South 87 degrees 23  minutes 50 seconds  East a distance  of 60
feet to a 3/4 inch Rebar tagged L.S. 16292 and the TRUE POINT OF BEGINNING.

PARCEL TWO:
- -----------

A 25 foot wide ingress/egress,  and public utility easement, said easement being
more  particularly  described  as lying 12.5 feet on each side of the  following
described centerline.

COMMENCING at the Southeast  corner of the above described  parcel of land a 3/4
inch Rebar tagged L.S. 16292.
         Thence  North 02 degrees 36 minutes 10 seconds East along the east line
of said parcel a distance of 31.5 feet.
         Thence  South 87 degrees 23 minutes 50 seconds  East a distance of 12.5
feet to the TRUE POINT OF BEGINNING.
         Thence  South 02 degrees 36  minutes 10 seconds  West a distance  of 31
feet.
         Thence South 01 degrees 59 minutes 33 seconds East a distance of 255.46
feet more or less to a POINT OF  TERMINATION  on the North line of Fourth  North
Avenue.

PARCEL THREE:
- -------------

A six (6) foot wide electric easement lying 3 feet on each side of the following
described centerline.
                                       13
<PAGE>
COMMENCING at the Southeast  corner of said parcel being a 3/4 inch Rebar tagged
L.S. 16292.
Thence  North 02 degrees 36 minutes 10 seconds  East along the east line of said
parcel a distance of 31.5 feet.
         Thence South 87 degrees 23 minutes 50 seconds East a distance of 3 feet
to the POINT OF BEGINNING.
         Thence  North 02 degrees 36 minutes 10 seconds  East a distance of 43.5
feet to the POINT OF TERMINATION.

                  Cholla Generating Station - Common Facilities

That certain  parcel of land  situated in the  Southwest  quarter of Section 30,
Township 18 North,  Range 20 East of the Gila and Salt River Base and  Meridian,
Navajo County, Arizona, being more particularly described as follows:

COMMENCING at the 2 1/2 inch capped pipe that marks the Southwest corner of said
Section 30,  from  whence the 2 1/2 inch  capped  pipe that marks the  Northwest
corner of said  Section 30 bears  North 0 degrees  35  minutes  35 seconds  West
(Basis of Bearings) 5328.02 feet distant;

         thence  North 0 degrees 35 minutes 35 seconds  West along the West line
of said Section 30 a distance of 2066.33 feet to a point on the Southerly  right
of way line of Interstate 40:

         thence South 49 degrees 52 minutes 46 seconds East along said Southerly
right of way line of  Interstate 40 a distance of 434.23 to a 5/8 inch rebar and
the TRUE POINT OF BEGINNING:

         thence South 49 degrees 52 minutes 46 seconds East along said Southerly
right of way line of  Interstate  40 a  distance  of  984.02  feet to a 5/8 inch
rebar;

         thence south 45 degrees 19 minutes 07 seconds West a distance of 360.77
feet to a 5/8 inch rebar;  

         thence  North 42  degrees 09  minutes  18  seconds  West a distance  of
1032.15 feet to a 5/8 inch rebar;

         thence North 58 degrees 04 minutes 11 seconds East a distance of 231.84
feet to a 5/8 inch rebar and the TRUE POINT OF BEGINNING.

Together  with a roadway  easement for ingress and egress 15 feet in width,  7.5
feet on each side of the following described centerline;

COMMENCING at the Southwest corner of said Section 30;
         thence North 88 degrees 27 minutes 16 seconds East along the South line
of said  Section 30 a distance  of 2066.41  feet to the  Arizona  Department  of
Transportation  brass cap that marks a point 290.28 feet right of I-40 Eastbound
station 1356+70;
         thence  North 02 degrees 52 minutes  West a distance  of 55.5 feet to a
point on the Southerly  right of way line of Interstate 40 and the TRUE POINT OF
BEGINNING:;
         thence North 86 degrees 55 minutes 35 seconds West a distance of 779.24
feet;
         thence North 10 degrees 42 minutes 02 seconds West a distance of 374.77
feet;
         thence North 52 degrees 06 minutes 27 seconds West a distance of 237.04
feet;
         thence North 59 degrees 34 minutes 00 seconds West a distance of 145.25
feet;  
         thence North 45 degrees 21 minutes 58 seconds West a distance of 180.23
feet;
         thence  North 09 degrees 38 minutes 02 seconds East a distance of 57.22
feet to a POINT OF TERMINATION on the Southerly line of the previously described
property and from whence the Southeasterly  corner of said property,  a 5/8 inch
rebar  bears  South 42 degrees 09  minutes 18 seconds  East a distance  of 33.41
feet;
                                       14
<PAGE>
And together with an easement for drainage purposes 30 feet in width, being more
particularly described as follows:

COMMENCING at the  Northwesterly  property  corner of the  previously  described
parcel, a 5/8 inch rebar and the TRUE POINT OF BEGINNING;
         thence North 49 degrees 52 minutes 46 seconds West along the  Southerly
right of way line of Interstate 40 a distance of 137.5 feet;
         thence  South 40 degrees 07 minutes 14 seconds  West a distance of 30.0
feet;
         thence South 49 degrees 52 minutes 46 seconds East a distance of 127.78
feet;
         thence  North 58 degrees 04 minutes 11 seconds East a distance of 31.53
feet to the TRUE POINT OF BEGINNING.

EXCEPT all coal and other minerals as reserved in Patent recorded in Docket 207,
Page 403.

                                 COCONINO COUNTY

                            Prescott Service Center A

That portion of Sheldon Street of the Original  Townsite of Prescott as recorded
in Book 4 of Maps,  and  Plats,  Page 22 on file at the  Office  of the  Yavapai
County  Recorder,  Yavapai  County,  Arizona,  more  particularly  described  as
follows:

Commencing at the  intersection  of the Westerly  right-of-way of Granite Street
and the Southerly  right-of-way of Sheldon Street,  said intersection point also
being the Northeast corner of Lot 1, Block "A" of said original Townsite; 
Thence West (assumed  bearing) along the Southerly  right-of-way of said Sheldon
Street, 209.12 feet to the TRUE POINT OF BEGINNING of this description;
Thence continuing West along the said Southerly  right-of-way of Sheldon Street,
124.12 feet to the  intersection  of the said Southerly  right-of-way of Sheldon
Street and the Easterly right-of-way of McCormick Street in said block "A";
Thence North,  66.25 feet to the  intersection of the Northerly  right-of-way of
said Sheldon Street and the Northerly  prolongation of the Easterly right-of-way
of McCormick Street;
Thence East along the  Northerly  right-of-way  of said Sheldon  Street,  124.12
feet; 
Thence South, 66.25 feet to the TRUE POINT OF BEGINNING.

                            Prescott Service Center B

That part of Lot 7, Section 33, Township 14 North,  Range 2 West of the Gila and
Salt River Base and Meridian, Yavapai County, Arizona, described as follows:

COMMENCING  at that  certain  point from whence the one  quarter  corner of said
Section 33 and Section 34 bears  North 60' 11" East a distance of 2571.65  feet;
thence North  0(degree) 46' 43" East, a distance of 130 feet to a point;  
thence South 89(degree) 13' 17" East, a distance of 180 feet to a point;
thence North 0(degree) 46' 43" East, a distance of 75 feet to a point;
thence South 89(degree) 13'17" East, a distance of 160 feet to a point;
thence North  0(degree) 46' 43" East a distance of 150 feet to the TRUE POINT OF
BEGINNING;
thence North 56(degree) 00' East 48.2 feet to a corner of the property described
in  instrument  recorded  in Book 158 of Deeds,  page 389,  records  of  Yavapai
County, Arizona;
                                       15
<PAGE>
thence  along the Westerly  boundary  line of property  described in  instrument
recorded in Book 158 of Deeds,  page 389,  records of Yavapai  County,  Arizona,
over the following courses:

         East  13.0  feet to a point;  
         North  5(degree)  00' East 32.0 feet to a point;  
         North 85(degree) 00' West 16.0 feet to a point;
         North 4(degree) 01' East 25.7 feet to a point;  
         North  59(degree) 14' East to the point of intersection

with the Southerly  boundary line or the Easterly  extension thereof of Bashford
Addition  First  Subdivision,  accord  to Book 2 of Maps,  page 94,  records  of
Yavapai County,  Arizona;  
thence Westerly along the said Southerly line and the Easterly extension thereof
of said Bashford  Addition First  Subdivision to the point of intersection  with
the Easterly  line of property  described in  instrument  recorded in Book 19 of
Deeds, page 575, records of Yavapai County, Arizona;

thence  Southerly  along  the  said  Easterly  line  of  property  described  in
instrument  recorded in Book 19 of Deeds,  page 575,  records of Yavapai County,
Arizona,  to the  point of  intersection  with the  Northerly  boundary  line of
property described in Parcel 3 of instrument recorded in Book 193 of Deeds, page
46, records of Yavapai  County,  Arizona;  
thence  North  89(degree)  13' 17" West along  said  Northerly  boundary  line a
distance of 325 feet;
thence North 0(degree) 46' 43" East, a distance of 20 feet to a point;
thence south  89(degree)  13' 17" East, a distance of 160 feet to the TRUE POINT
OF BEGINNING.

                                    Valle Sub

Lot 422, GRAND CANYON SUBDIVISION UNIT TEN, according to Case 2 MAP 162, records
of Coconino County, Arizona

EXCEPT oil, gas and minerals as reserved in Deed  recorded in Docket 1741,  page
277, records of Coconino county, Arizona.

         SECTION 11. THE  ELECTRIC  SUBSTATIONS  OF THE COMPANY,  including  all
buildings,  structures, towers, poles, all equipment, appliances and devices for
transforming, converting and distributing electric energy, and all land owned by
the  Company  upon  which  the  same  are  situated,  and  all of the  Company's
easements,  rights of way, rights, machinery,  equipment,  appliances,  devices,
licenses  and  supplies  forming  a part of said  substations,  or any of  them,
including additions and improvements to any of the foregoing, or used or enjoyed
or capable of being used or enjoyed in conjunction with any thereof,  including,
without limitation, the following substations:
                                       16
<PAGE>
         Name                Location                   County and State
         ----                --------                   ----------------

         Wild Burro          New River                  Maricopa County, Arizona
         San Luis            Yuma                       Yuma County, Arizona
         Bonneybrook         Florence                   Pinal County, Arizona
         Coyote Springs      Prescott Valley            Yavapai County, Arizona
         Litchfield          Litchfield Park            Maricopa County, Arizona
         Bald Mountain       Prescott Valley            Yavapai County, Arizona
         Woody Mountain      Flagstaff                  Coconino County, Arizona
         Thompson Peak       Scottsdale                 Maricopa County, Arizona
         Desert Ridge        Scottsdale                 Maricopa County, Arizona
         Yavapai             Chino Valley               Yavapai County, Arizona
         Shea                Scottsdale                 Maricopa County, Arizona

         SECTION 12.  Additions,  extensions  and  improvements  to THE ELECTRIC
TRANSMISSION SYSTEMS of the Company including,  among other things, 8.5 miles of
69kV from Bald  Mountain to Dewey and 2.0 miles of 69kV from Bell to Skunk Creek
Tie.

         SECTION 13.  Additions,  extensions  and  improvements  to THE ELECTRIC
DISTRIBUTION  SYSTEMS of the Company,  including the  construction of additional
facilities  throughout  the  Company's  service  area,  as well as  extension of
residential  and  downtown  underground   distribution   facilities,   including
associated  distribution equipment such as voltage regulators,  capacitor banks,
sectionalizing  equipment,  transformers,  street lighting  systems,  meters and
services, including reconstruction and improvements to provide efficient Company
operation.
                                       17
<PAGE>
         IN WITNESS WHEREOF, ARIZONA PUBLIC SERVICE COMPANY, party hereto of the
first  part,  has caused its  corporate  name to be hereunto  affixed,  and this
instrument to be signed and sealed by its President, one of its Vice Presidents,
or its Treasurer,  and its corporate seal to be attested by its Secretary or one
of its Assistant  Secretaries or Associate Secretaries for and in its behalf, in
the City of  Phoenix,  Arizona,  and THE BANK OF NEW YORK,  party  hereto of the
second part,  has caused its  corporate  name to be hereunto  affixed,  and this
instrument  to be signed and sealed by one of its Vice  Presidents  or Assistant
Vice  Presidents  and its corporate  seal to be attested by one of its Assistant
Vice  Presidents or Assistant  Treasurers for and in its behalf,  in the City of
New York, New York, all as of the 15th day of November, 1996.

                                                  ARIZONA PUBLIC SERVICE COMPANY

                                                   Nancy E. Newquist
                                                  ------------------------------
                                                            Treasurer

Attest:

Betsy A. Pregulman
- ---------------------------------------
           Associate Secretary

Executed, sealed and delivered by
   ARIZONA PUBLIC SERVICE COMPANY
   in the presence of:

Michael P. Hennigan
- ---------------------------------------
Brenda Kucharek
- ---------------------------------------


                                                            [SEAL]

                                                THE BANK OF NEW YORK, As Trustee
                                                  Walter N. Gitlin
                                                 ------------------------------
                                                  Vice President


Attest:
Robert E. Patterson
- ---------------------------------------
Assistant Vice President

Executed, sealed and delivered by
    THE BANK OF NEW YORK in the 
    presence of:
Jocelyn Lynch
- ---------------------------------------
Kathleen Boyle
- ---------------------------------------

                                                            [SEAL]
                                       18
<PAGE>



STATE OF ARIZONA           )
                           )  ss.:
COUNTY OF MARICOPA         )

         On this 21st day of November,  1996,  before  me,  Maria R. Marrs,  the
undersigned  officer,  personally  appeared Nancy E. Newquist,  who acknowledged
herself  to be the  Treasurer  of ARIZONA  PUBLIC  SERVICE  COMPANY,  an Arizona
corporation, and that she, as such Treasurer being authorized so to do, executed
the foregoing instrument for the purposes therein contained, by signing the name
of the corporation by herself as Treasurer.

         IN WITNESS WHEREOF, I have hereunto set my hand and seal.

                                            Maria R. Marrs
                                          --------------------------------------
                                                     Notary Public

                                          My Commission Expires  July 21, 1998
                                                               -----------------
[SEAL]

STATE OF ARIZONA           )
                           )  ss.:
COUNTY OF MARICOPA         )

         On this 21st day of November,  1996,  before  me,  Maria R. Marrs,  the
undersigned officer,  personally came Nancy E. Newquist,  to me known, who being
by me duly sworn, did depose and say that she resides in Phoenix,  Arizona, that
she  is the  Treasurer  of  ARIZONA  PUBLIC  SERVICE  COMPANY,  the  corporation
described in and which executed the above instrument; that she knows the seal of
said  corporation;  that the seal affixed to said  instrument is such  corporate
seal;  that it was so  affixed  by  order  of the  Board  of  Directors  of said
corporation, and that she signed her name thereto by like order.

         IN WITNESS WHEREOF, I have hereunto set my hand and seal.


                                             Maria R. Marrs
                                          --------------------------------------
                                                     Notary Public

                                          My Commission Expires  July 21, 1998
                                                               -----------------
[SEAL]

STATE OF ARIZONA           )
                           ) ss.:
COUNTY OF MARICOPA         )

         This  instrument  was  acknowledged  before me on November  21, 1996 by
Nancy E. Newquist and Betsy A.  Pregulman as Treasurer and Associate  Secretary,
respectively, of ARIZONA PUBLIC SERVICE COMPANY.

                                           Maria R. Marrs
                                          --------------------------------------
                                                     Notary Public

                                          My Commission Expires  July 21, 1998
                                                               -----------------
[SEAL]
                                       19
<PAGE>
STATE OF NEW YORK         )
                          ) ss.:
COUNTY OF NEW YORK        )

         On this 20th day of  November,  1996,  before me,  William J.  Cassels,
Notary Public in and for the County and State aforesaid,  residing therein, duly
commissioned and sworn,  personally appeared Walter N. Gitlin, known to me to be
a Vice  President of THE BANK OF NEW YORK, New York banking  corporation,  which
executed  the within  instrument,  and Robert E.  Patterson known to me to be an
Assistant  Vice  President of The Bank of New York,  who being by me duly sworn,
acknowledged before me that the seal affixed to said instrument is the corporate
seal of The Bank of New York, that they, being authorized so to do, executed the
within instrument on behalf of The Bank of New York by authority of its board of
directors,  and that said instrument is the free act and deed of The Bank of New
York for the purposes therein contained.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal the day and year in this certificate first above written.


                                           William J.  Cassels
                                          --------------------------------------
                                                     Notary Public

                                          My Commission Expires  May 16, 1998
                                                               -----------------

[SEAL]


STATE OF NEW YORK          )
                           ) ss.:
COUNTY OF NEW YORK         )

         This  instrument  was  acknowledged  before me on November  20, 1996 by
Walter N. Gitlin and Robert E.  Patterson as Vice  President and Assistant  Vice
President, respectively, of THE BANK OF NEW YORK.


                                           William J.  Cassels
                                          --------------------------------------
                                                     Notary Public

                                          My Commission Expires  May 16, 1998
                                                               -----------------

[SEAL]
                                       20

                                   EXHIBIT 4.2

Number A-1                                                          $100,000,000

                                       APS
                         ARIZONA PUBLIC SERVICE COMPANY
                              FIRST MORTGAGE BOND,
                              SENIOR NOTE SERIES A

         Arizona Public Service  Company,  a corporation of the State of Arizona
(hereinafter called the Company), for value received,  hereby promises to pay to
THE BANK OF NEW YORK, as Trustee,  or registered  assigns,  the principal sum of
One Hundred  Million  Dollars on November 15, 2006, and to pay interest  thereon
from November 15, 1996 or from the most recent Interest Payment Date (as defined
below)  with  respect  to which  interest  has been paid or duly  provided  for,
semiannually  on May 15 and November 15 in each year (each an "Interest  Payment
Date"),  commencing May 15, 1997, at the rate of 6 3/4% per annum (calculated on
the basis of a 360-day year of twelve 30-day months) until the principal  hereof
is paid or made  available  for  payment to the holder of record of this bond on
the May 1 or  November  1, as the  case may be,  next  preceding  such  Interest
Payment  Date,  unless  such day is a legal  holiday  or a day on which  banking
institutions  in The City of New York are authorized to remain closed,  in which
case on the next  preceding  day which  shall not be a legal  holiday  or day on
which such  institutions are authorized by law to remain closed.  Payment of the
principal of (and premium, if any) and interest on this bond will be made at the
office or agency of the Company  maintained  for that  purpose in the Borough of
Manhattan,  The City of New York,  New York,  in such  coin or  currency  of the
United  States of America as, at the time of payment is legal tender for payment
of public and private debts, provided,  however, that payment of interest may be
made at the option of the  Company by check  mailed to the address of the person
entitled thereto as such address shall appear on the  registration  books of the
Company.

         This bond shall not become  obligatory  until The Bank of New York, the
Trustee under the Mortgage, or its successor  thereunder,  shall have signed the
form of authentication certificate endorsed hereon.

         IN WITNESS WHEREOF, Arizona Public Service Company has caused this bond
to be  signed  in its  corporate  name  by  its  President  or  one of its  Vice
Presidents  and its  corporate  seal to be  impressed  or  imprinted  hereon and
attested by its Secretary or one of its Assistant Secretaries.

         DATED:  November 22, 1996

ARIZONA PUBLIC SERVICE COMPANY         
                                       
____________________________________   
Executive Vice President, 
and Chief Financial Officer
                                       
ATTEST:                                
                                       
____________________________________   
Secretary                              


TRUSTEE'S AUTHENTICATION CERTIFICATE

         This  bond  is one of the  bonds,  of  the  series  herein  designated,
described or provided for in the within mentioned Mortgage.

THE BANK OF NEW YORK, AS TRUSTEE

By  ________________________________
      Authorized Signatory
<PAGE>
                         ARIZONA PUBLIC SERVICE COMPANY

                    First Mortgage Bond, Senior Note Series A

         This bond is one of an issue of bonds of the Company issuable in series
and is one of a series known as its First Mortgage Bonds,  Senior Note Series A,
all bonds of all  series  issued  and to be issued  under  and  equally  secured
(except insofar as any sinking or other fund, established in accordance with the
provisions of the Mortgage hereinafter mentioned, may afford additional security
for the bonds of any particular series) by a Mortgage and Deed of Trust (herein,
together with any indenture  supplemental  thereto,  including the  supplemental
indentures  dated as of  December  1,  1947,  April 1, 1949,  February  1, 1950,
December 1, 1950,  February 1, 1953, November 1, 1953, March 1, 1954, October 1,
1957, March 1, 1959, November 1, 1961, June 1, 1962, December 1, 1962, September
1, 1963,  September  1,  1967,  April 1, 1970,  March 15,  1972,  April 1, 1974,
February 15, 1975, June 1, 1975,  November 15, 1975, April 15, 1977, January 15,
1978, March 1, 1979, October 15, 1979, May 15, 1980, February 2, 1982, April 15,
1982, July 1, 1983,  October 15, 1983,  June 15, 1984,  January 15, 1985, May 1,
1985, June 1, 1985,  November 1, 1985,  January 15, 1986,  March 1, 1986, May 1,
1986, February 1, 1987, June 1, 1987, November 15, 1987, April 1, 1989, February
15, 1990,  May 15, 1990,  April 15, 1991,  December 15, 1991,  January 15, 1992,
March 1, 1992, June 15, 1992,  February 1, 1993, August 1, 1993, August 1, 1993,
September 15, 1993,  March 1, 1994, and November 15, 1996,  called the Mortgage)
dated as of July 1, 1946,  executed by the  Company to The Bank of New York,  as
Trustee.  Reference is made to the Mortgage  for a  description  of the property
mortgaged and pledged, the nature and extent of the security,  the rights of the
holders  of the bonds and of the  Trustee  in  respect  thereof,  the duties and
immunities of the Trustee, the terms and conditions upon which the bonds are and
are to be secured,  and the  circumstances  under which  additional bonds may be
issued.  With the consent of the Company and to the extent  permitted  by and as
provided in the Mortgage,  the rights and  obligations of the Company and/or the
rights of the  holders  of the bonds  and/or  the  terms and  provisions  of the
Mortgage  may be  modified or altered by  affirmative  vote of the holders of at
least seventy per centum (70%) in principal amount of the bonds then outstanding
under the  Mortgage  and, if the rights of the holders of one or more,  but less
than all,  series of bonds then  outstanding  are to be  affected,  then also by
affirmative  vote of the  holders  of at  least  seventy  per  centum  (70%)  in
principal  amount of the bonds then outstanding of each series of bonds so to be
affected  (excluding in any case bonds disqualified from voting by reason of the
Company's interest therein as provided in the Mortgage);  provided that, without
the consent of the holder  hereof,  no such  modification  or alteration  shall,
among other things,  impair or affect the right of the holder to receive payment
of the principal of and interest on this bond and other amounts, if any, payable
upon the  redemption  hereof on or after  the  respective  due  dates  expressed
herein,  or permit  the  creation  of any lien equal or prior to the lien of the
Mortgage  or deprive the holder of the  benefit of a lien on the  mortgaged  and
pledged property.

         The Company has issued One Hundred  Million Dollars  ($100,000,000)  in
aggregate  principal  amount of its 6-3/4%  Senior  Notes Due 2006 (the  "Senior
Notes  Due  2006")  pursuant  to the  provisions  of the  Indenture  dated as of
November  15, 1996 (the "Senior  Note  Indenture"),  between the Company and The
Bank of New York, as trustee  (said  trustee or any successor  trustee under the
Senior  Note  Indenture  being  hereinafter  referred  to as  the  "Senior  Note
Trustee"),  as supplemented  by the First  Supplemental  Indenture,  dated as of
November 15,  1996,  between the Company and the Senior Note Trustee (the "First
Supplemental Indenture").

         The Company has issued the bonds of this series to secure the Company's
obligation to pay principal,  premium,  if any, and interest on the Senior Notes
Due 2006 prior to the Release Date (as hereinafter defined).

         The  Company's   obligation  to  make  payments  with  respect  to  the
principal, premium and/or interest on the bonds of this series shall be fully or
partially,  as the case may be,  satisfied and discharged to the extent that, at
the time  that any  such  payment  shall be due,  the  corresponding  amount  of
principal of, premium,  if any, and/or interest then due on the Senior Notes Due
2006 shall have been fully or partially paid, as the case may be, or there shall
have been  deposited  with the Senior  Note  Trustee  pursuant  to Section  501,
Section  1103,  Section  1205 or Article  Fourteen of the Senior Note  Indenture
trust funds  sufficient  under the  provisions  of said  Sections and Article to
fully or  partially  pay,  as the  case  may be,  the  corresponding  amount  of
principal,  premium,  if any,  and/or  interest then due on the Senior Notes Due
2006.

         Upon payment of the principal of, premium,  if any, and interest due on
the  Senior  Notes  Due  2006,  whether  at  maturity  or prior to  maturity  by
redemption or otherwise,  or upon provision for the payment  thereof having been
made  in  accordance  with  Section  501 or  Section  1402  of the  Senior  Note
Indenture,  bonds of this series in a principal  amount  equal to the  principal
amount of Senior Notes Due 2006 so paid or for which such
                                        2
<PAGE>
provision  for payment has been made shall be deemed fully paid,  satisfied  and
discharged and the obligations of the Company thereunder shall be terminated and
such bonds of this series shall be  surrendered to and cancelled by the Trustee.
From and after such date as all bonds  issued  under the  Mortgage  (other  than
Senior  Note First  Mortgage  Bonds,  as such term is defined in the Senior Note
Indenture)  have been retired  through  payment,  redemption,  or otherwise  at,
before or after maturity thereof (the "Release Date"),  the bonds of this series
shall be deemed fully paid,  satisfied and  discharged and the obligation of the
Company  hereunder  shall be terminated.  On the Release Date, the bonds of this
series shall be surrendered to and cancelled by the Trustee.

         This  bond  is  transferable  as  prescribed  in  the  Mortgage  by the
registered owner hereof in person,  or by his duly authorized  attorney,  at the
office or agency of the Company or at the office or agency of the Company in the
Borough  of  Manhattan,  The City of New York,  New  York,  upon  surrender  and
cancellation of this bond, and thereupon a new fully registered bond of the same
series for a like principal  amount will be issued to the transferee in exchange
herefor as provided in the Mortgage.

         In the manner  prescribed in the Mortgage,  bonds of this series,  upon
surrender thereof,  for cancellation,  at the office or agency of the Company in
the  Borough  of  Manhattan,  The City of New York,  New York,  together  with a
written  instrument  of transfer,  if required by the Company or by the Trustee,
duly executed by the registered  owner or by his duly authorized  attorney,  are
exchangeable  for a like aggregate  principal amount of bonds in registered form
of the same series of other authorized  denominations.  Bonds of this series are
issuable in  denominations  of One Thousand  Dollars or any  integral  multiples
thereof.

         No service charge shall be made for any such transfer or exchange,  but
the Company may  require  the  payment of a sum  sufficient  to cover any tax or
other governmental charge payable in connection therewith.

         The bonds of this series shall be redeemed,  in whole or in part,  from
time to time, on the date on which a  corresponding  principal  amount of Senior
Notes Due 2006 are  redeemed,  as provided in the Senior Note  Indenture and the
First Supplemental  Indenture upon the Senior Note Trustee's notification of the
Trustee of such redemption, at a redemption  price equal to the redemption price
of such  Senior  Notes Due 2006  being so  redeemed . Any such  notice  shall be
received by the Trustee no later than 5 days prior to any redemption  date fixed
for the bonds of this series to be  redeemed  and shall  specify  the  principal
amount of such bonds of this series to be redeemed, the redemption date, and the
amount of accrued interest and premium, if any, to be paid thereon.  The Company
shall  deposit in trust with the  Trustee  on the  redemption  date an amount of
money sufficient to pay the principal amount including accrued interest, if any,
and  premium,  if  any,  on the  bonds  of  this  series  to be  redeemed.  Upon
presentation  to the  Trustee  of any bonds of this  series by the  Senior  Note
Trustee for payment,  such bonds of this series so  presented  shall be redeemed
and paid in full.

         In the event the principal of all Senior Notes Due 2006 is declared due
and payable or becomes  automatically due and payable pursuant to Section 602 of
the Senior Note Indenture,  upon the filing with the Trustee of a written demand
for the  acceleration  of the payment of principal of all the bonds,  such bonds
shall become immediately due and payable.

         Redemption  of the  bonds of this  series  shall be  effected,  without
further  notice by the Company to the Trustee,  by the payment by the Company of
the applicable  redemption  price  specified in this bond at the place specified
for payment of principal of and interest on such bonds.
                                       3
<PAGE>
         The Senior  Note  Series A Bonds will not be subject to  prepayment  or
redemption  prior to maturity  except as provided  herein,  notwithstanding  the
provisions  of Section 39 or Section 64 of the  Mortgage,  or with  "Proceeds of
Released Property," as defined in the Mortgage.

         The bonds of this series will not be subject to any sinking fund.

         The Company  covenants and agrees that,  prior to Release Date, it will
not take any action  (except  as  described  in this bond) that would  cause the
outstanding  principal  amount of the  bonds of this  series to be less than the
then outstanding principal amount of the Senior Notes Due 2006.

         The Company and the Trustee may deem and treat the person in whose name
this  bond is  registered  as the  absolute  owner  hereof  for the  purpose  of
receiving  payment and for all other  purposes,  and neither the Company nor the
Trustee shall be affected by any notice to the contrary.

         No  recourse  shall  be had  for the  payment  of the  principal  of or
interest on this bond against any  incorporator  or any past,  present or future
subscriber to the capital stock, stockholder, officer or director of the Company
or of any  predecessor or successor  corporation,  as such,  either  directly or
through the Company or any predecessor or successor corporation,  under any rule
of law,  statute or  constitution  or by the  enforcement  of any  assessment or
otherwise,  all such  liability  of  incorporators,  subscribers,  stockholders,
officers  and  directors  being  released  by the holder or owner  hereof by the
acceptance of this bond and being  likewise  waived and released by the terms of
the Mortgage. 
                                       4

                                   Exhibit 4.5







                         ARIZONA PUBLIC SERVICE COMPANY

                                       TO

                              THE BANK OF NEW YORK

                                     Trustee



                                 --------------


                                    Indenture

                          Dated as of November 15, 1996


                                 --------------


                               (For Senior Notes)







<PAGE>
         ..............................................................
    Certain Sections of this Indenture relating to Sections 310 through 318,
                 inclusive, of the Trust Indenture Act of 1939:

Trust Indenture
  Act Section                                                 Indenture Section

ss. 310 (a) (1)    .........................................  709
        (a) (2)    .........................................  709
        (a) (3)    .........................................  Not Applicable
        (a) (4)    .........................................  Not Applicable
        (b)        .........................................  708
                                                              710
ss. 311 (a)        .........................................  713
        (b)        .........................................  713
ss. 312 (a)        .........................................  801
                                                              802
        (b)        .........................................  802
        (c)        .........................................  802
ss. 313 (a)        .........................................  803
        (b)        .........................................  803
        (c)        .........................................  803
        (d)        .........................................  803
ss. 314 (a)        .........................................  804
        (a) (4)    .........................................  101
                                                              1104
        (b)        .........................................  1105
        (c) (1)    .........................................  102
        (c) (2)    .........................................  102
        (c) (3)    .........................................  Not Applicable
        (d)        .........................................  102
                   .........................................  404
        (e)        .........................................  102
ss. 315 (a)        .........................................  701
        (b)        .........................................  702
        (c)        .........................................  701
        (d)        .........................................  701
        (e)        .........................................  614
ss. 316 (a)        .........................................  101
        (a) (1)(A) .........................................  602
                                                              612
        (a) (1)(B) .........................................  613
        (a) (2)    .........................................  Not Applicable
        (b)        .........................................  608
        (c)        .........................................  104
ss. 317 (a) (1)    .........................................  603
        (a) (2)    .........................................  604
        (b)        .........................................  1103
ss. 318 (a)        .........................................  107

- -------------------
NOTE: This  reconciliation and tie shall not, for any purpose, be deemed to be a
part of the Indenture.
<PAGE>
                                                               TABLE OF CONTENTS
                                   ----------

                                                                            PAGE
                                                                            ----
PARTIES
RECITALS OF THE COMPANY


                                   ARTICLE ONE

             DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

<TABLE>
<S>                                                                                                    <C>
SECTION 101.       Definitions:
                   Act.................................................................................  2
                   Affiliate...........................................................................  2
                   Authenticating Agent................................................................  2
                   Board of Directors..................................................................  2
                   Board Resolution....................................................................  2
                   Business Day........................................................................  2
                   Commission..........................................................................  2
                   Company.............................................................................  2
                   Company Request; Company Order......................................................  2
                   Corporate Trust Office..............................................................  2
                   Corporation.........................................................................  2
                   Covenant Defeasance.................................................................  3
                   Defaulted Interest..................................................................  3
                   Defeasance..........................................................................  3
                   Depositary..........................................................................  3
                   Event of Default....................................................................  3
                   Exchange Act........................................................................  3
                   Expiration Date.....................................................................  3
                   Expert..............................................................................  3
                   First Mortgage.....................................................................   3
                   First Mortgage Bonds................................................................  3
                   Global Note.........................................................................  3
                   Holder..............................................................................  3
                   Indenture...........................................................................  3
                   Interest............................................................................  3
                   Interest Payment Date...............................................................  3
                   Investment Company Act..............................................................  4
                   Maturity............................................................................  4
                   Mortgage Trustee....................................................................  4
                   Notes...............................................................................  4
                   Note Register; Note Registrar.......................................................  4
                   Notice of Default...................................................................  4
                   Officers' Certificate...............................................................  4
                   Opinion of Counsel..................................................................  4
                   Original Issue Discount Note........................................................  4
                   Outstanding.........................................................................  4
                   Paying Agent........................................................................  5
                   Person..............................................................................  5
                   Place of Payment....................................................................  5
                   Predecessor Note....................................................................  5
                   Redemption Date.....................................................................  5
                   Redemption Price....................................................................  6
                   Regular Record Date.................................................................  6
                   Release Date........................................................................  6
                   Responsible Officer.................................................................  6
                   Securities Act......................................................................  6
                   Senior Note First Mortgage Bonds....................................................  6
                   Special Record Date.................................................................  6
                   Stated Maturity.....................................................................  6
                   Subsidiary..........................................................................  6 
</TABLE>
<PAGE>
<TABLE>
<S>                                                                                                     <C>
                   Trust Indenture Act.................................................................  6
                   Trustee.............................................................................  6
                   U.S. Government Obligation..........................................................  7
                   Vice President......................................................................  7
SECTION 102.  Compliance Certificates and Opinions.....................................................  7
SECTION 103.  Form of Documents Delivered to Trustee...................................................  7
SECTION 104.  Acts of Holders; Record Dates............................................................  8
SECTION 105.  Notices, Etc., to Trustee and Company.................................................... 10
SECTION 106.  Notice to Holders; Waiver................................................................ 10
SECTION 107.  Conflict with Trust Indenture Act........................................................ 11
SECTION 108.  Effect of Headings and Table of Contents................................................. 11
SECTION 109.  Successors and Assigns................................................................... 11
SECTION 110.  Separability Clause...................................................................... 11
SECTION 111.  Benefits of Indenture.................................................................... 11
SECTION 112.  Governing Law............................................................................ 11
SECTION 113.  Legal Holidays                                                                            12


                                            ARTICLE TWO

                                            NOTE FORMS

SECTION 201.  Forms Generally.......................................................................... 12
SECTION 202.  Form of Face of Note..................................................................... 12
SECTION 203.  Form of Reverse of Note.................................................................. 14
SECTION 204.  Form of Legend for Global Notes.......................................................... 18
SECTION 205.  Form of Trustee's Certificate of Authentication.......................................... 19

                                             ARTICLE THREE

                                             THE NOTES

SECTION 301.  Amount Unlimited; Issuable in Series..................................................... 19
SECTION 302.  Denominations............................................................................ 22
SECTION 303.  Execution, Authentication, Delivery and Dating........................................... 22
SECTION 304.  Temporary Notes.......................................................................... 24
SECTION 305.  Registration, Registration of Transfer and Exchange...................................... 24
SECTION 306.  Mutilated, Destroyed, Lost and Stolen Notes.............................................. 26
SECTION 307.  Payment of Interest; Interest Rights Preserved........................................... 26
SECTION 308.  Persons Deemed Owners.................................................................... 27
SECTION 309.  Cancellation............................................................................. 28
SECTION 310.  Computation of Interest.................................................................. 28
SECTION 311.  CUSIP Numbers                                                                             28
</TABLE>
<PAGE>
<TABLE>
<S>                                                                                                     <C>
SECTION 312.  Payments on Senior Note First Mortgage Bonds............................................. 28

                                              ARTICLE FOUR

                                 SENIOR NOTE FIRST MORTGAGE BONDS

SECTION 401.  Acceptance of Senior Note First Mortgage Bonds........................................... 29
SECTION 402.  Terms of Senior Note First Mortgage Bonds................................................ 29
SECTION 403.  Senior Note First Mortgage bonds as Security for Notes................................... 29
SECTION 404.  Fair Value Certificate................................................................... 30
SECTION 405.  Senior Note First Mortgage Bonds Held by the Trustee..................................... 31
SECTION 406.  No Transfer of Senior Note First Mortgage bonds; Exception............................... 31
SECTION 407.  Delivery to the Company of all Senior Note First Mortgage bonds.......................... 31
SECTION 408.  Further Assurances....................................................................... 32
SECTION 409.  Exchange and Surrender of Senior Note First Mortgage bonds............................... 32

                                              ARTICLE FIVE

                                    SATISFACTION AND DISCHARGE

SECTION 501.  Satisfaction and Discharge of Indenture.................................................. 33
SECTION 502.  Application of Trust Money............................................................... 34

                                            ARTICLE SIX

                                             REMEDIES

SECTION 601.  Events of Default........................................................................ 34
SECTION 602.  Acceleration of Maturity; Rescission and Annulment....................................... 36
SECTION 603.  Collection of Indebtedness and Suits for
                       Enforcement by Trustee.......................................................... 37
SECTION 604.  Trustee May File Proofs of Claim......................................................... 37
SECTION 605.  Trustee May Enforce Claims Without Possession
                       of Notes........................................................................ 38
SECTION 606.  Application of Money Collected........................................................... 38
SECTION 607.  Limitation on Suits...................................................................... 38
SECTION 608.  Unconditional Right of Holders to Receive Principal,
                       Premium and Interest............................................................ 39
SECTION 609.  Restoration of Rights and Remedies....................................................... 39
SECTION 610.  Rights and Remedies Cumulative........................................................... 40
SECTION 611.  Delay or Omission Not Waiver............................................................. 40
SECTION 612.  Control by Holders....................................................................... 40
SECTION 613.  Waiver of Past Defaults.................................................................. 40
SECTION 614.  Undertaking for Costs.................................................................... 41
SECTION 615.  Waiver of Usury, Stay or Extension Laws.................................................. 41

                                           ARTICLE SEVEN

                                            THE TRUSTEE

SECTION 701.  Certain Duties and Responsibilities...................................................... 41
SECTION 702.  Notice of Defaults....................................................................... 42
SECTION 703.  Certain Rights of Trustee................................................................ 42
SECTION 704.  Not Responsible for Recitals or Issuance of Notes........................................ 43
SECTION 705.  May Hold Notes........................................................................... 43
SECTION 706.  Money Held in Trust...................................................................... 43
SECTION 707.  Compensation and Reimbursement........................................................... 44
SECTION 708.  Conflicting Interests.................................................................... 44
SECTION 709.  Corporate Trustee Required; Eligibility.................................................. 45
SECTION 710.  Resignation and Removal; Appointment of Successor........................................ 45
SECTION 711.  Acceptance of Appointment by Successor................................................... 46
SECTION 712.  Merger, Conversion, Consolidation or Succession
                        to Business.................................................................... 47
SECTION 713.  Preferential Collection of Claims Against Company........................................ 48
</TABLE>
<PAGE>
<TABLE>
<S>                                                                                                     <C>
SECTION 714.  Appointment of Authenticating Agent...................................................... 48

                                           ARTICLE EIGHT

                         HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 801.  Company to Furnish Trustee Names and Addresses
                       of Holders...................................................................... 50
SECTION 802.  Preservation of Information; Communications
                       to Holders...................................................................... 50
SECTION 803.  Reports by Trustee....................................................................... 50
SECTION 804.  Reports by Company....................................................................... 51

                                           ARTICLE NINE

                       CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 901.  Company May Consolidate, Etc., Only on
                        Certain Terms.................................................................. 51
SECTION 902.  Successor Substituted.................................................................... 52

                                            ARTICLE TEN

                                      SUPPLEMENTAL INDENTURES

SECTION 1001.  Supplemental Indentures Without Consent of Holders...................................... 53
SECTION 1002.  Supplemental Indentures With Consent of Holders......................................... 54
SECTION 1003.  Execution of Supplemental Indentures.................................................... 55
SECTION 1004.  Effect of Supplemental Indentures....................................................... 55
SECTION 1005.  Conformity with Trust Indenture Act..................................................... 55
SECTION 1006.  Reference in Securities to Supplemental Indentures...................................... 55

                                          ARTICLE ELEVEN

                                             COVENANTS

SECTION 1101.  Payment of Principal, Premium and Interest.............................................. 56
SECTION 1102.  Maintenance of Office or Agency......................................................... 56
SECTION 1103.  Money for Notes Payments to Be Held in Trust............................................ 56
SECTION 1104.  Statement by Officers as to Default..................................................... 57
SECTION 1105.  Recording, Filing, etc.; Opinions of Counsel............................................ 58
SECTION 1106.  Existence............................................................................... 58
SECTION 1107.  Maintenance of Properties............................................................... 59
SECTION 1108.  Payment of Taxes and Other Claims....................................................... 59
SECTION 1109.  Waiver of Certain Covenants............................................................. 59
SECTION 1110.  Calculation of Original Issue Discount.................................................. 59

                                          ARTICLE TWELVE

                                        REDEMPTION OF NOTES

SECTION 1201.  Applicability of Article................................................................ 60
SECTION 1202.  Election to Redeem; Notice to Trustee................................................... 60
SECTION 1203.  Selection by Trustee of Notes to Be Redeemed............................................ 60
SECTION 1204.  Notice of Redemption.................................................................... 61
SECTION 1205.  Deposit of Redemption Price............................................................. 62
SECTION 1206.  Notes Payable on Redemption Date........................................................ 62
SECTION 1207.  Notes Redeemed in Part.................................................................. 62
</TABLE>
<PAGE>
<TABLE>
                                         ARTICLE THIRTEEN

                                           SINKING FUNDS
<S>                                                                                                     <C>
SECTION 1301.  Applicability of Article................................................................ 63
SECTION 1302.  Satisfaction of Sinking Fund Payments with Notes........................................ 63
SECTION 1303.  Redemption of Notes for Sinking Fund.................................................... 63

                                         ARTICLE FOURTEEN

                                DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1401.  Company's Option to Effect Defeasance or
                       Covenant Defeasance............................................................. 64
SECTION 1402.  Defeasance and Discharge................................................................ 64
SECTION 1403.  Covenant Defeasance..................................................................... 65
SECTION 1404.  Conditions to Defeasance or Covenant Defeasance......................................... 65
SECTION 1405.  Deposited Money and U.S. Government Obligations
                    to Be Held in Trust; Miscellaneous Provisions...................................... 67
SECTION 1406.  Reinstatement........................................................................... 67
</TABLE>
TESTIMONIUM
SIGNATURES AND SEALS
ACKNOWLEDGEMENTS
<PAGE>
      INDENTURE,  dated as of November 15, 1996,  between Arizona Public Service
Company,  a corporation  duly organized and existing under the laws of the State
of Arizona  (herein called the  "Company"),  having its principal  office at 400
North Fifth Street, Phoenix, Arizona 85004, and The Bank of New York, a New York
banking corporation, as Trustee (herein called the "Trustee").


                             RECITALS OF THE COMPANY

      The  Company  has duly  authorized  the  execution  and  delivery  of this
Indenture  to provide  for the  issuance  from time to time of its Senior  Notes
(herein  called  the  "Notes"),  to be issued  in one or more  series as in this
Indenture provided.

   Subject to the provisions of Section 403 hereof, the Company may issue one or
more series of Senior Note First  Mortgage  Bonds (as  hereinafter  defined) and
deliver  such Senior Note First  Mortgage  Bonds to the Trustee to hold in trust
for the  benefit  of the  respective  Holders  from time to time of the  related
series  of  Notes,  or  require  the  Trustee  to  deliver  to the  Company  for
cancellation any and all Senior Note First Mortgage Bonds held by the Trustee.

      All things  necessary  to make this  Indenture  a valid  agreement  of the
Company, in accordance with its terms, have been done.

      NOW, THEREFORE, THIS INDENTURE WITNESSETH:

      For and in  consideration of the premises and the purchase of the Notes by
the Holders thereof,  it is mutually  agreed,  for the benefit of all Holders of
the Notes or of series thereof, as follows:


                                   ARTICLE ONE

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION


SECTION 101.  Definitions.

      For all purposes of this Indenture, except as otherwise expressly provided
or unless the context otherwise requires:

         (1) the terms  defined in this Article  have the  meanings  assigned to
them in this Article and include the plural as well as the singular;

         (2) all  other  terms  used  herein  which  are  defined  in the  Trust
Indenture  Act,  either  directly or by  reference  therein,  have the  meanings
assigned to them therein;

         (3) all accounting terms not otherwise defined herein have the meanings
assigned to them in accordance with generally  accepted  accounting  principles,
and, except as otherwise herein expressly provided, the term "generally accepted
accounting  principles"  with respect to any  computation  required or permitted
hereunder shall mean such accounting principles as are generally accepted in the
United States of America;

         (4)  unless  the  context  otherwise  requires,  any  reference  to  an
"Article" or a "Section" refers to an Article or a Section,  as the case may be,
of this Indenture; and
<PAGE>
         (5) the words  "herein",  "hereof" and  "hereunder"  and other words of
similar  import  refer to this  Indenture  as a whole and not to any  particular
Article, Section or other subdivision.

      "Act", when used with respect to any Holder, has the meaning specified in
Section 104.

      "Affiliate"  of any  specified  Person means any other Person  directly or
indirectly  controlling  or  controlled  by or under  direct or indirect  common
control  with  such  specified  Person.  For the  purposes  of this  definition,
"control"  when used with  respect to any  specified  Person  means the power to
direct the  management  and  policies of such  Person,  directly or  indirectly,
whether  through the ownership of voting  securities,  by contract or otherwise;
and the terms  "controlling" and "controlled"  have meanings  correlative to the
foregoing.

      "Authenticating Agent" means any Person authorized by the Trustee pursuant
to Section 714 to act on behalf of the Trustee to  authenticate  Notes of one or
more series.

      "Board of Directors" means either the board of directors of the Company or
any duly authorized committee of that board.

      "Board Resolution" means a copy of a resolution certified by the Secretary
or an Assistant  Secretary  or  Associate  Secretary of the Company to have been
duly adopted by the Board of Directors and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

      "Business Day", when used with respect to any Place of Payment, means each
Monday,  Tuesday,  Wednesday,  Thursday  and Friday  which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
or executive order to close.

      "Commission"  means the Securities and Exchange  Commission,  from time to
time  constituted,  created under the Exchange Act, or, if at any time after the
execution of this  instrument such Commission is not existing and performing the
duties  now  assigned  to it  under  the  Trust  Indenture  Act,  then  the body
performing such duties at such time.

      "Company"  means the Person named as the "Company" in the first  paragraph
of this instrument  until a successor  Person shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Company" shall mean
such successor Person.

      "Company  Request" or  "Company  Order"  means a written  request or order
signed  in the  name of the  Company  by its  Chairman  of the  Board,  its Vice
Chairman of the Board, its President or a Vice President,  and by its Treasurer,
an Assistant  Treasurer,  its Secretary,  an Assistant Secretary or an Associate
Secretary, and delivered to the Trustee.

      "Corporate  Trust  Office"  means the office of the Trustee in the City of
New York, New York at which at any particular  time its corporate trust business
shall be principally administered, which office at the date hereof is located at
101 Barclay Street, New York, New York 10286.

      "Corporation"  means  a  corporation,  association,  company,  joint-stock
company or business trust.
                                        2
<PAGE>
      "Covenant Defeasance" has the meaning specified in Section 1403.

      "Defaulted Interest" has the meaning specified in Section 307.

      "Defeasance" has the meaning specified in Section 1402.

      "Depositary"  means, with respect to Notes of any series issuable in whole
or in part in the form of one or more Global Notes, a clearing agency registered
under the Exchange Act that is designated to act as Depositary for such Notes as
contemplated by Section 301.

      "Event of Default" has the meaning specified in Section 601.

      "Exchange Act" means the  Securities  Exchange Act of 1934 and any statute
successor thereto, in each case as amended from time to time.

      "Expiration Date" has the meaning specified in Section 104.

      "Expert"  means any officer of the Company  familiar with the terms of the
First Mortgage and this Indenture, any law firm, any investment banking firm, or
any other Person,  in each case that is appointed by Company Order, is an expert
in the applicable matter, and is satisfactory in the reasonable  judgment of the
Trustee.

      "First Mortgage" means the Mortgage and Deed of Trust, dated as of July 1,
1946, from the Company to The Bank of New York, as successor  trustee to Bank of
America National Trust and Savings Association, as supplemented and amended from
time to time.

      "First  Mortgage  Bonds"  means all  first  mortgage  bonds  issued by the
Company and outstanding  under the First Mortgage,  other than Senior Note First
Mortgage Bonds.

      "Global Note" means a Note that  evidences all or part of the Notes of any
series and bears the legend set forth in Section  204 (or such  legend as may be
specified as contemplated by Section 301 for such Notes).

      "Holder"  means a Person in whose  name a Note is  registered  in the Note
Register.

      "Indenture"  means this  instrument as  originally  executed and as it may
from  time  to  time  be  supplemented  or  amended  by one or  more  indentures
supplemental  hereto entered into pursuant to the applicable  provisions hereof,
including,  for all  purposes  of this  instrument  and  any  such  supplemental
indenture,  the  provisions  of the Trust  Indenture Act that are deemed to be a
part  of and  govern  this  instrument  and  any  such  supplemental  indenture,
respectively.  The term  "Indenture"  shall also include the terms of particular
series of Notes established as contemplated by Section 301.

      "independent", when applied to any accountant, appraiser, or other Expert,
shall mean such a Person who is in fact independent, selected by the Company and
approved by the Trustee in the exercise of reasonable care.

      "Interest",  when used with  respect to an Original  Issue  Discount  Note
which by its terms bears interest only after  Maturity,  means interest  payable
after Maturity.

      "Interest  Payment  Date",  when used with respect to any Note,  means the
Stated Maturity of an instalment of interest on such Note.
                                        3
<PAGE>
      "Investment  Company Act" means the Investment Company Act of 1940 and any
statute successor thereto, in each case as amended from time to time.

      "Maturity",  when used with  respect to any Note,  means the date on which
the principal of such Note or an instalment of principal becomes due and payable
as therein or herein provided,  whether at the Stated Maturity or by declaration
of acceleration, call for redemption or otherwise.

      "Mortgage  Trustee"  means the Person serving as trustee at the time under
the First Mortgage.

      "Notes" has the meaning  stated in the first recital of this Indenture and
more  particularly  means any  Notes  authenticated  and  delivered  under  this
Indenture.

      "Note  Register"  and  "Note  Registrar"  have  the  respective   meanings
specified in Section 305.

      "Notice  of  Default"  means a  written  notice of the kind  specified  in
Section 601(4).

      "Officers'  Certificate" means a certificate signed by the Chairman of the
Board, a Vice Chairman of the Board,  the President or a Vice President,  and by
the  Treasurer,  an Assistant  Treasurer,  the  Controller,  the Secretary or an
Assistant  Secretary,  of the Company,  and delivered to the Trustee. One of the
officers signing an Officers'  Certificate  given pursuant to Section 1104 shall
be the principal executive, financial or accounting officer of the Company.

      "Opinion  of  Counsel"  means a written  opinion  of  counsel,  who may be
counsel  for the  Company,  or other  counsel  who  shall be  acceptable  to the
Trustee.

      "Original Issue Discount Note" means any Note which provides for an amount
less than the principal  amount thereof to be due and payable upon a declaration
of acceleration of the Maturity thereof pursuant to Section 602.

      "Outstanding",  when used with respect to Notes,  means, as of the date of
determination,  all Notes  theretofore  authenticated  and delivered  under this
Indenture, except:

         (1) Notes  theretofore  cancelled  by the Trustee or  delivered  to the
   Trustee for cancellation;

         (2) Notes for whose payment or redemption money in the necessary amount
   has been  theretofore  deposited  with the Trustee or any Paying Agent (other
   than the  Company)  in  trust or set  aside  and  segregated  in trust by the
   Company (if the Company shall act as its own Paying Agent) for the Holders of
   such Notes;  provided that, if such Notes are to be redeemed,  notice of such
   redemption  has been duly  given  pursuant  to this  Indenture  or  provision
   therefor satisfactory to the Trustee has been made;

         (3) Notes as to which Defeasance has been effected  pursuant to Section
   1402; and
                                        4
<PAGE>
         (4) Notes  which have been paid  pursuant to Section 306 or in exchange
   for or in lieu of which other  Notes have been  authenticated  and  delivered
   pursuant  to this  Indenture,  other  than any such Notes in respect of which
   there shall have been presented to the Trustee proof  satisfactory to it that
   such Notes are held by a bona fide  purchaser  in whose  hands such Notes are
   valid obligations of the Company;

provided,  however,  that in  determining  whether the Holders of the  requisite
principal amount of the Outstanding Notes have given, made or taken any request,
demand,  authorization,  direction,  notice,  consent,  waiver  or other  action
hereunder as of any date, (A) the principal amount of an Original Issue Discount
Note  which  shall  be  deemed  to be  Outstanding  shall be the  amount  of the
principal  thereof  which  would  be  due  and  payable  as of  such  date  upon
acceleration  of the Maturity  thereof to such date pursuant to Section 602, (B)
if, as of such date, the principal  amount  payable at the Stated  Maturity of a
Note is not  determinable,  the  principal  amount of such Note  which  shall be
deemed to be  Outstanding  shall be the amount as  specified  or  determined  as
contemplated by Section 301, (C) the principal  amount of a Note  denominated in
one or more  foreign  currencies  or currency  units which shall be deemed to be
Outstanding shall be the U.S. dollar  equivalent,  determined as of such date in
the manner provided as  contemplated by Section 301, of the principal  amount of
such Note (or, in the case of a Note  described  in Clause (A) or (B) above,  of
the amount  determined as provided in such  Clause),  and (D) Notes owned by the
Company or any other  obligor upon the Notes or any  Affiliate of the Company or
of such other obligor  shall be  disregarded  and deemed not to be  Outstanding,
except that,  in  determining  whether the Trustee shall be protected in relying
upon any such request, demand, authorization, direction, notice, consent, waiver
or other  action,  only Notes  which the Trustee  actually  knows to be so owned
shall be so  disregarded.  Notes so owned which have been  pledged in good faith
may be regarded as Outstanding if the pledgee establishes to the satisfaction of
the Trustee the  pledgee's  right so to act with  respect to such Notes and that
the  pledgee  is not the  Company  or any  other  obligor  upon the Notes or any
Affiliate of the Company or of such other obligor.

      "Paying  Agent"  means any  Person  authorized  by the  Company to pay the
principal of or any premium or interest on any Notes on behalf of the Company.

      "Person" means any individual,  corporation,  partnership,  joint venture,
trust,  unincorporated  organization  or  government  or any agency or political
subdivision thereof.

      "Place of  Payment",  when used with  respect to the Notes of any  series,
means the place or places where the principal of and any premium and interest on
the Notes of that series are payable as  specified  as  contemplated  by Section
301.

      "Predecessor  Note" of any  particular  Note  means  every  previous  Note
evidencing  all or a  portion  of the  same  debt  as  that  evidenced  by  such
particular   Note;  and,  for  the  purposes  of  this   definition,   any  Note
authenticated  and  delivered  under Section 306 in exchange for or in lieu of a
mutilated,  destroyed,  lost or stolen Note shall be deemed to evidence the same
debt as the mutilated, destroyed, lost or stolen Note.

      "Redemption  Date",  when used with  respect  to any Note to be  redeemed,
means the date fixed for such redemption by or pursuant to this Indenture.
                                        5
<PAGE>
      "Redemption  Price",  when used with  respect to any Note to be  redeemed,
means the price at which it is to be redeemed pursuant to this Indenture.

      "Regular  Record  Date" for the interest  payable on any Interest  Payment
Date on the Notes of any series  means the date  specified  for that  purpose as
contemplated by Section 301.

      "Release  Date" means the date as of which all First  Mortgage  Bonds have
been retired through payment,  redemption,  or otherwise at, before or after the
maturity thereof.

      "Responsible  Officer",  when used with respect to the Trustee,  means the
chairman or any  vice-chairman  of the board of  directors,  the chairman or any
vice-chairman of the executive committee of the board of directors, the chairman
of the trust committee,  the president,  any vice president,  the secretary, any
assistant secretary,  the treasurer,  any assistant treasurer,  the cashier, any
assistant  cashier,  any senior trust  officer,  any trust  officer or assistant
trust officer,  the controller or any assistant  controller or any other officer
of the Trustee  customarily  performing  functions similar to those performed by
any of  the  above  designated  officers  and  also  means,  with  respect  to a
particular  corporate  trust  matter,  any other  officer to whom such matter is
referred  because  of his  knowledge  of and  familiarity  with  the  particular
subject.

      "Securities  Act"  means  the  Securities  Act of  1933  and  any  statute
successor thereto, in each case as amended from time to time.

      "Senior  Note First  Mortgage  Bonds"  shall mean any bonds  issued by the
Company  under the First  Mortgage  and  delivered  to the  Trustee  pursuant to
Section 401 hereof.

      "Special  Record Date" for the payment of any Defaulted  Interest  means a
date fixed by the Trustee pursuant to Section 307.

      "Stated Maturity", when used with respect to any Note or any instalment of
principal thereof or interest thereon,  means the date specified in such Note as
the  fixed  date on which  the  principal  of such  Note or such  instalment  of
principal or interest is due and payable.

      "Subsidiary"  means a corporation more than 50% of the outstanding  voting
stock of which is owned,  directly  or  indirectly,  by the Company or by one or
more other  Subsidiaries,  or by the Company and one or more other Subsidiaries.
For the purposes of this definition, "voting stock" means stock which ordinarily
has voting power for the election of directors,  whether at all times or only so
long as no  senior  class  of stock  has such  voting  power  by  reason  of any
contingency.

      "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force at
the date as of which this instrument was executed;  provided,  however,  that in
the event the Trust  Indenture  Act of 1939 is amended  after such date,  "Trust
Indenture Act" means, to the extent  required by any such  amendment,  the Trust
Indenture Act of 1939 as so amended.

      "Trustee"  means the Person named as the "Trustee" in the first  paragraph
of this instrument until a successor  Trustee shall have become such pursuant to
the applicable provisions of this Indenture, and thereafter "Trustee" shall mean
or include each Person who
                                        6
<PAGE>
is then a  Trustee  hereunder,  and if at any time  there is more  than one such
Person, "Trustee" as used with respect to the Notes of any series shall mean the
Trustee with respect to Notes of that series.

      "U.S. Government Obligation" has the meaning specified in Section 1404.

      "Vice  President",  when used with  respect to the Company or the Trustee,
means any vice  president,  whether or not  designated  by a number or a word or
words added before or after the title "vice president".


SECTION 102.  Compliance Certificates and Opinions.

      Upon any  application or request by the Company to the Trustee to take any
action under any provision of this  Indenture,  the Company shall furnish to the
Trustee  such  certificates  and  opinions  as may be  required  under the Trust
Indenture Act. Each such certificate or opinion shall be given in the form of an
Officers'  Certificate,  if to be  given by an  officer  of the  Company,  or an
Opinion  of  Counsel,  if to be given by  counsel,  and  shall  comply  with the
requirements of the Trust Indenture Act and any other  requirements set forth in
this Indenture.

      Every  certificate or opinion with respect to compliance  with a condition
or covenant provided for in this Indenture shall include,

         (1) a  statement  that each  individual  signing  such  certificate  or
opinion has read such covenant or condition and the definitions  herein relating
thereto;

         (2) a brief  statement as to the nature and scope of the examination or
investigation   upon  which  the  statements  or  opinions   contained  in  such
certificate or opinion are based;

         (3) a statement  that, in the opinion of each such  individual,  he has
made such  examination or investigation as is necessary to enable him to express
an informed  opinion as to whether or not such  covenant or  condition  has been
complied with; and

         (4) a statement as to whether,  in the opinion of each such individual,
such condition or covenant has been complied with.


SECTION 103.  Form of Documents Delivered to Trustee.

      In any case where  several  matters are  required to be  certified  by, or
covered by an opinion of, any specified  Person,  it is not  necessary  that all
such  matters  be  certified  by, or covered by the  opinion  of,  only one such
Person,  or that they be so certified or covered by only one  document,  but one
such Person may certify or give an opinion  with respect to some matters and one
or more other such Persons as to other matters,  and any such Person may certify
or give an opinion as to such matters in one or several documents.

      Any  certificate  or opinion of an  officer of the  Company  may be based,
insofar as it relates to legal  matters,  upon a  certificate  or opinion of, or
representations by, counsel,
                                        7
<PAGE>
unless such officer  knows,  or in the exercise of reasonable  care should know,
that the certificate or opinion or  representations  with respect to the matters
upon  which  his  certificate  or  opinion  is  based  are  erroneous.  Any such
certificate or opinion of counsel may be based, insofar as it relates to factual
matters,  upon a certificate or opinion of, or representations by, an officer or
officers  of the  Company  stating  that the  information  with  respect to such
factual matters is in the possession of the Company,  unless such counsel knows,
or in the exercise of  reasonable  care should  know,  that the  certificate  or
opinion or representations with respect to such matters are erroneous.

      Where  any  Person  is  required  to  make,  give or  execute  two or more
applications,  requests, consents,  certificates,  statements, opinions or other
instruments  under this Indenture,  they may, but need not, be consolidated  and
form one instrument.


SECTION 104.  Acts of Holders; Record Dates.

      Any request, demand, authorization,  direction, notice, consent, waiver or
other action provided or permitted by this Indenture to be given,  made or taken
by Holders  may be  embodied  in and  evidenced  by one or more  instruments  of
substantially  similar  tenor  signed by such Holders in person or by agent duly
appointed in writing;  and, except as herein otherwise expressly provided,  such
action shall become  effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required,  to the Company. Such
instrument  or  instruments  (and the  action  embodied  therein  and  evidenced
thereby) are herein  sometimes  referred to as the "Act" of the Holders  signing
such instrument or instruments.  Proof of execution of any such instrument or of
a writing  appointing any such agent shall be sufficient for any purpose of this
Indenture  and (subject to Section 701)  conclusive  in favor of the Trustee and
the Company, if made in the manner provided in this Section.

      The fact and date of the execution by any Person of any such instrument or
writing may be proved by the  affidavit  of a witness of such  execution or by a
certificate  of a notary  public  or  other  officer  authorized  by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him the execution thereof. Where such execution is by
a  signer  acting  in a  capacity  other  than  his  individual  capacity,  such
certificate  or  affidavit  shall  also  constitute   sufficient  proof  of  his
authority. The fact and date of the execution of any such instrument or writing,
or the  authority of the Person  executing  the same,  may also be proved in any
other manner which the Trustee deems sufficient.

      The ownership of Notes shall be proved by the Note Register.

      Any request, demand, authorization,  direction, notice, consent, waiver or
other Act of the Holder of any Note shall bind every  future  Holder of the same
Note and the Holder of every  Note  issued  upon the  registration  of  transfer
thereof or in exchange  therefor or in lieu thereof in respect of anything done,
omitted  or  suffered  to be done by the  Trustee  or the  Company  in  reliance
thereon, whether or not notation of such action is made upon such Note.
                                        8
<PAGE>
      The  Company  may  set  any  day as a  record  date  for  the  purpose  of
determining  the Holders of  Outstanding  Notes of any series  entitled to give,
make or take any request,  demand,  authorization,  direction,  notice, consent,
waiver or other action provided or permitted by this Indenture to be given, made
or taken by Holders of Notes of such series,  provided  that the Company may not
set a record date for, and the provisions of this paragraph shall not apply with
respect  to,  the  giving or  making  of any  notice,  declaration,  request  or
direction referred to in the next paragraph.  If any record date is set pursuant
to this  paragraph,  the Holders of Outstanding  Notes of the relevant series on
such record date, and no other Holders,  shall be entitled to take or revoke the
relevant  action,  whether or not such Holders  remain Holders after such record
date;  provided that no such action shall be effective hereunder unless taken on
or prior to the applicable Expiration Date by Holders of the requisite principal
amount of Outstanding Notes of such series on such record date.  Nothing in this
paragraph  shall be  construed  to prevent the Company from setting a new record
date for any action for which a record date has previously  been set pursuant to
this paragraph (whereupon the record date previously set shall automatically and
with no action by any Person be cancelled and of no effect), and nothing in this
paragraph  shall be construed to render  ineffective any action taken by Holders
of the requisite principal amount of Outstanding Notes of the relevant series on
the date such action is taken. Promptly after any record date is set pursuant to
this  paragraph,  the Company,  at its own  expense,  shall cause notice of such
record date, the proposed  action by Holders and the applicable  Expiration Date
to be  given  to the  Trustee  in  writing  and to each  Holder  of Notes of the
relevant series in the manner set forth in Section 106.

      The  Trustee  may  set  any  day as a  record  date  for  the  purpose  of
determining  the Holders of Outstanding  Notes of any series entitled to join in
the  giving or making of (i) any  Notice of  Default,  (ii) any  declaration  of
acceleration  referred  to in  Section  602,  (iii)  any  request  to  institute
proceedings  referred to in Section 607(2) or (iv) any direction  referred to in
Section 612, in each case with  respect to Notes of such  series.  If any record
date is set pursuant to this paragraph, the Holders of Outstanding Notes of such
series on such record date, and no other  Holders,  shall be entitled to join in
such notice, declaration, request or direction or to revoke the same, whether or
not such Holders  remain  Holders after such record date;  provided that no such
action shall be effective  hereunder  unless taken on or prior to the applicable
Expiration  Date by Holders of the  requisite  principal  amount of  Outstanding
Notes of such series on such record  date.  Nothing in this  paragraph  shall be
construed  to prevent the Trustee  from setting a new record date for any action
for which a record  date has  previously  been set  pursuant  to this  paragraph
(whereupon the record date previously set shall automatically and with no action
by any Person be  cancelled  and of no effect),  and  nothing in this  paragraph
shall be  construed  to render  ineffective  any action  taken by Holders of the
requisite  principal  amount of Outstanding  Notes of the relevant series on the
date such action is taken.  Promptly  after any record  date is set  pursuant to
this paragraph,  the Trustee,  at the Company's  expense,  shall cause notice of
such record date, the proposed  action by Holders and the applicable  Expiration
Date to be given to the  Company in writing  and to each  Holder of Notes of the
relevant series in the manner set forth in Section 106.

      With  respect to any record date set pursuant to this  Section,  the party
hereto which sets such record  dates may  designate  any day as the  "Expiration
Date" and from time to time may change  the  Expiration  Date to any  earlier or
later day;  provided that no such change shall be effective unless notice of the
proposed new Expiration Date is given to the other
                                        9
<PAGE>
party hereto in writing,  and to each Holder of Notes of the relevant  series in
the manner  set forth in Section  106,  on or prior to the  existing  Expiration
Date. If an Expiration  Date is not  designated  with respect to any record date
set pursuant to this Section,  the party hereto which set such record date shall
be deemed to have  initially  designated the 180th day after such record date as
the  Expiration  Date with respect  thereto,  subject to its right to change the
Expiration Date as provided in this paragraph. Notwithstanding the foregoing, no
Expiration  Date shall be later than the 180th day after the  applicable  record
date.

      Without  limiting the foregoing,  a Holder entitled  hereunder to take any
action hereunder with regard to any particular Note may do so with regard to all
or any  part  of the  principal  amount  of such  Note  or by one or  more  duly
appointed  agents  each of which may do so  pursuant  to such  appointment  with
regard to all or any part of such principal amount.


SECTION 105.  Notices, Etc., to Trustee and Company.

      Any request, demand, authorization,  direction, notice, consent, waiver or
Act of Holders or other  document  provided or permitted by this Indenture to be
made upon, given or furnished to, or filed with,

         (1) the Trustee by any Holder or by the Company shall be sufficient for
every purpose hereunder if made, given, furnished or filed in writing to or with
the  Trustee  at  its  Corporate  Trust  Office,  Attention:  Corporate  Trustee
Administration, or

         (2) the Company by the Trustee or by any Holder shall be sufficient for
every purpose  hereunder  (unless  otherwise  herein  expressly  provided) if in
writing and mailed,  first-class postage prepaid, to the Company addressed to it
at the address of its principal  office specified in the first paragraph of this
instrument  or at any other  address  previously  furnished  in  writing  to the
Trustee by the Company.

SECTION 106.  Notice to Holders; Waiver.

      Where this  Indenture  provides  for notice to Holders of any event,  such
notice shall be sufficiently given (unless otherwise herein expressly  provided)
if in writing and mailed,  first-class  postage prepaid, to each Holder affected
by such event, at his address as it appears in the Note Register, not later than
the latest  date (if any),  and not  earlier  than the  earliest  date (if any),
prescribed for the giving of such notice. In any case where notice to Holders is
given by mail,  neither the failure to mail such  notice,  nor any defect in any
notice so mailed,  to any particular Holder shall affect the sufficiency of such
notice with respect to other Holders.  Where this Indenture  provides for notice
in any manner,  such  notice may be waived in writing by the Person  entitled to
receive such notice,  either before or after the event, and such waiver shall be
the equivalent of such notice.  Waivers of notice by Holders shall be filed with
the Trustee,  but such filing shall not be a condition precedent to the validity
of any action taken in reliance upon such waiver.

      In case by reason of the  suspension  of regular mail service or by reason
of any other cause it shall be  impracticable  to give such notice by mail, then
such  notification  as shall be made  with the  approval  of the  Trustee  shall
constitute a sufficient notification for every purpose hereunder.
                                       10
<PAGE>
SECTION 107.  Conflict with Trust Indenture Act.

      If any provision hereof limits, qualifies or conflicts with a provision of
the Trust  Indenture  Act which is  required  under such Act to be a part of and
govern this Indenture,  the latter provision shall control.  If any provision of
this  Indenture  modifies or excludes any  provision of the Trust  Indenture Act
which may be so modified or excluded,  the latter  provision  shall be deemed to
apply to this Indenture as so modified or to be excluded, as the case may be.


SECTION 108.  Effect of Headings and Table of Contents.

      The Article and Section  headings herein and the Table of Contents are for
convenience only and shall not affect the construction hereof.


SECTION 109.  Successors and Assigns.

      All covenants and  agreements in this  Indenture by the Company shall bind
its successors and assigns, whether so expressed or not.


SECTION 110.  Separability Clause.

      In case any provision in this  Indenture or in the Notes shall be invalid,
illegal or  unenforceable,  the  validity,  legality and  enforceability  of the
remaining provisions shall not in any way be affected or impaired thereby.


SECTION 111.  Benefits of Indenture.

      Nothing in this Indenture or in the Notes, express or implied,  shall give
to any Person,  other than the parties hereto and their successors hereunder and
the Holders,  any benefit or any legal or equitable right, remedy or claim under
this Indenture.


SECTION 112.  Governing Law.

      This  Indenture  and the  Notes  shall be  governed  by and  construed  in
accordance with the law of the State of New York, without regard to conflicts of
laws principles thereof.
                                       11
<PAGE>
SECTION 113.  Legal Holidays.

      In any case where any Interest  Payment  Date,  Redemption  Date or Stated
Maturity of any Note shall not be a Business  Day at any Place of Payment,  then
(notwithstanding  any other  provision of this  Indenture or of the Notes (other
than a provision of any Note which specifically states that such provision shall
apply in lieu of this  Section))  payment of interest or principal (and premium,
if any) need not be made at such Place of Payment on such date,  but may be made
on the next succeeding Business Day at such Place of Payment with the same force
and effect as if made on the Interest Payment Date or Redemption Date, or at the
Stated Maturity.


                                   ARTICLE TWO

                                   NOTE FORMS


SECTION 201.  Forms Generally.

      The Notes of each series shall be in  substantially  the form set forth in
this Article,  or in such other form as shall be established by or pursuant to a
Board Resolution or in one or more indentures  supplemental hereto, in each case
with such appropriate insertions, omissions,  substitutions and other variations
as are  required or  permitted  by this  Indenture,  and may have such  letters,
numbers or other marks of identification and such legends or endorsements placed
thereon as may be required to comply with the rules of any  securities  exchange
or Depositary therefor or as may,  consistently  herewith,  be determined by the
officers executing such Notes, as evidenced by their execution  thereof.  If the
form of Notes of any series is  established  by action taken pursuant to a Board
Resolution, a copy of an appropriate record of such action shall be certified by
the  Secretary  or an Assistant  Secretary  of the Company and  delivered to the
Trustee at or prior to the delivery of the Company Order contemplated by Section
303 for the authentication and delivery of such Notes.

      The definitive  Notes shall be printed,  lithographed or engraved on steel
engraved  borders or may be produced in any other  manner,  all as determined by
the officers  executing  such Notes,  as  evidenced  by their  execution of such
Notes.


SECTION 202.  Form of Face of Note.

      [Insert  any  legend  required  by  the  Internal  Revenue  Code  and  the
regulations thereunder.]

                         ARIZONA PUBLIC SERVICE COMPANY

               ..................................................

No. .........                                                         $ ........
                                                                 CUSIP No.______
                                       12
<PAGE>
      Arizona Public Service Company,  a corporation duly organized and existing
under the laws of Arizona (herein called the "Company",  which term includes any
successor  Person  under  the  Indenture  hereinafter  referred  to),  for value
received,          hereby          promises          to          pay          to
 ...............................................,   or  registered  assigns,  the
principal    sum   of    ......................................    Dollars    on
 ........................................................ [if the Note is to bear
interest  prior  to  Maturity,  insert  _ ,  and to pay  interest  thereon  from
 .............  or from the most recent  Interest  Payment Date to which interest
has  been  paid  or  duly  provided  for,  semi-annually  on  ............   and
 ............ in each year, commencing ........., at the rate of ....% per annum,
until the principal hereof is paid or made available for payment [if applicable,
insert _ , provided that any principal and premium,  and any such  instalment of
interest, which is overdue shall bear interest at the rate of ...% per annum (to
the extent that the payment of such interest shall be legally enforceable), from
the  dates  such  amounts  are due  until  they are paid or made  available  for
payment, and such interest shall be payable on demand]. The interest so payable,
and punctually paid or duly provided for, on any Interest  Payment Date will, as
provided  in such  Indenture,  be paid to the Person in whose name this Note (or
one or more  Predecessor  Notes) is  registered  at the close of business on the
Regular  Record Date for such  interest,  which shall be the .......  or .......
(whether  or not a  Business  Day),  as the case  may be,  next  preceding  such
Interest Payment Date. Any such interest not so punctually paid or duly provided
for will forthwith cease to be payable to the Holder on such Regular Record Date
and may  either be paid to the  Person  in whose  name this Note (or one or more
Predecessor  Notes) is registered  at the close of business on a Special  Record
Date for the  payment of such  Defaulted  Interest  to be fixed by the  Trustee,
notice  whereof  shall be given to Holders of Notes of this series not less than
10 days prior to such Special  Record Date,  or be paid at any time in any other
lawful manner not inconsistent with the requirements of any securities  exchange
on which the Notes of this series may be listed,  and upon such notice as may be
required by such exchange, all as more fully provided in said Indenture].

[If the Note is not to bear interest  prior to Maturity,  insert _ The principal
of this Note shall not bear interest  except in the case of a default in payment
of principal upon  acceleration,  upon  redemption or at Stated  Maturity and in
such case the overdue  principal and any overdue  premium shall bear interest at
the rate of ....% per annum (to the extent  that the  payment  of such  interest
shall be legally  enforceable),  from the dates such  amounts are due until they
are paid or made  available  for payment.  Interest on any overdue  principal or
premium shall be payable on demand.  Any such  interest on overdue  principal or
premium  which is not paid on demand shall bear  interest at the rate of ......%
per annum (to the extent that the payment of such interest on interest  shall be
legally enforceable),  from the date of such demand until the amount so demanded
is paid or made available for payment.
Interest on any overdue interest shall be payable on demand.]

      Payment of the  principal  of (and  premium,  if any) and [if  applicable,
insert _ any such] interest on this Note will be made at the office or agency of
the  Company  maintained  for that  purpose  in  ............,  in such  coin or
currency  of the  United  States of  America  as at the time of payment is legal
tender for  payment  of public  and  private  debts [if  applicable,  insert _ ;
provided,  however, that at the option of the Company payment of interest may be
made by check  mailed to the  address  of the  Person  entitled  thereto as such
address shall appear in the Note Register].
                                       13
<PAGE>
      Reference is hereby made to the further  provisions of this Note set forth
on the reverse hereof,  which further provisions shall for all purposes have the
same effect as if set forth at this place.

      Unless the certificate of  authentication  hereon has been executed by the
Trustee referred to on the reverse hereof by manual  signature,  this Note shall
not be entitled to any benefit under the Indenture or be valid or obligatory for
any purpose.

      IN WITNESS  WHEREOF,  the Company has caused  this  instrument  to be duly
executed under its corporate seal.



                                                  ARIZONA PUBLIC SERVICE COMPANY

                                                    By..........................

Attest:

 ......................


SECTION 203.  Form of Reverse of Note.

      This Note is one of a duly  authorized  issue of securities of the Company
(herein called the "Notes"), issued and to be issued in one or more series under
an  Indenture,  dated as of November  15, 1996 (herein  called the  "Indenture",
which term shall have the meaning  assigned to it in such  instrument),  between
the Company and The Bank of New York, as Trustee  (herein  called the "Trustee",
which term includes any successor trustee under the Indenture), and reference is
hereby  made  to  the  Indenture  for a  statement  of  the  respective  rights,
limitations  of rights,  duties and  immunities  thereunder of the Company,  the
Trustee  and the Holders of the Notes and of the terms upon which the Notes are,
and are to be,  authenticated  and  delivered.  This  Note is one of the  series
designated  on the face hereof [if  applicable,  insert _ , limited in aggregate
principal amount to $...........].

   [If the Note is  issued  before  the  Release  Date,  insert  __ Prior to the
Release  Date (as  hereinafter  defined),  this  Note will be  secured  by First
Mortgage  Bonds,  Senior Note Series  .......  (the "Senior Note Series  .......
Bonds")  delivered  by the Company to the Trustee for the benefit of the Holders
of the series of Notes of which this Note is a part,  issued  under the Mortgage
and Deed of Trust, dated as of July 1, 1946, from the Company to The Bank of New
York, as successor trustee (the "Mortgage Trustee"), as supplemented and amended
(the  "First  Mortgage").  Reference  is  made  to  the  First  Mortgage  for  a
description  of property  mortgaged  and  pledged,  the nature and extent of the
security,  the rights of the holders of the first mortgage bonds under the First
Mortgage  and of the  Mortgage  Trustee  in  respect  thereof,  the  duties  and
immunities of the Mortgage  Trustee and the terms and conditions  upon which the
Senior Note Series ......  Bonds are secured and the  circumstances  under which
additional first mortgage bonds may be issued.
                                       14
<PAGE>
   FROM AND AFTER SUCH TIME AS ALL FIRST  MORTGAGE BONDS (OTHER THAN SENIOR NOTE
FIRST  MORTGAGE  BONDS,  AS SUCH TERM IS  DEFINED IN THE  INDENTURE,)  HAVE BEEN
RETIRED  THROUGH  PAYMENT,  REDEMPTION  OR  OTHERWISE  AT,  BEFORE  OR AFTER THE
MATURITY  THEREOF (THE "RELEASE  DATE"),  THE SENIOR NOTE FIRST  MORTGAGE  BONDS
SHALL CEASE TO SECURE THE NOTES IN ANY MANNER.]

      [If  applicable,  insert  _ The  Notes  of  this  series  are  subject  to
redemption upon not less than 30 days' notice by mail, [if applicable,  insert _
(1) on ...........  in any year commencing with the year ......  and ending with
the year  ......  through  operation  of the  sinking  fund for this series at a
Redemption Price equal to 100% of the principal amount, and (2)] at any time [if
applicable,  insert _ on or after  ..........,  19..], as a whole or in part, at
the election of the Company,  at the following  Redemption  Prices (expressed as
percen- tages of the principal amount): If redeemed [if applicable,  insert _ on
or before  ...............,  ...%, and if redeemed]  during the 12-month  period
beginning ............. of the years indicated,



Year          Redemption                Year                       Redemption
- ----            Price                   ----                         Price
              ----------                                           ----------







and  thereafter at a Redemption  Price equal to .....% of the principal  amount,
together in the case of any such  redemption [if  applicable,  insert _ (whether
through  operation of the sinking fund or otherwise)]  with accrued  interest to
the Redemption  Date, but interest  installments  whose Stated Maturity is on or
prior to such  Redemption  Date will be payable to the Holders of such Notes, or
one or more  Predecessor  Notes,  of  record  at the  close of  business  on the
relevant  Record Dates  referred to on the face  hereof,  all as provided in the
Indenture.]

      [If  applicable,  insert  _ The  Notes  of  this  series  are  subject  to
redemption  upon not less than 30 days' notice by mail, (1) on  ............  in
any year  commencing  with the year ....  and ending with the year ....  through
operation  of the  sinking  fund for this  series at the  Redemption  Prices for
redemption  through  operation of the sinking fund  (expressed as percentages of
the  principal  amount)  set forth in the table  below,  and (2) at any time [if
applicable,  insert _ on or after  ............],  as a whole or in part, at the
election of the Company, at the Redemption Prices for redemption  otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below:  If redeemed  during the  12-month  period
beginning ............ of the years indicated,
                                       15
<PAGE>

Year            Redemption Price                       Redemption Price For
- ----             For Redemption                        Redemption Otherwise
               Through Operation                      Than Through Operation
                     of the                             of the Sinking Fund
                  Sinking Fund                        ----------------------
               -----------------






and  thereafter at a Redemption  Price equal to .....% of the principal  amount,
together in the case of any such redemption  (whether  through  operation of the
sinking fund or otherwise)  with accrued  interest to the  Redemption  Date, but
interest  installments  whose Stated  Maturity is on or prior to such Redemption
Date will be payable to the  Holders of such Notes,  or one or more  Predecessor
Notes,  of record at the close of business on the relevant Record Dates referred
to on the face hereof, all as provided in the Indenture.]

      [If applicable,  insert _ Notwithstanding  the foregoing,  the Company may
not, prior to .............,  redeem any Notes of this series as contemplated by
[if applicable, insert _ Clause (2) of] the preceding paragraph as a part of, or
in  anticipation  of, any refunding  operation by the  application,  directly or
indirectly,   of  moneys  borrowed  having  an  interest  cost  to  the  Company
(calculated in accordance with generally  accepted  financial  practice) of less
than .....% per annum.]

      [If applicable, insert _ The sinking fund for this series provides for the
redemption on  ............  in each year  beginning  with the year .......  and
ending  with  the  year  ......  of  [if  applicable,  insert  _ not  less  than
$..........  ("mandatory sinking fund") and not more than] $.........  aggregate
principal  amount of Notes of this  series.  Notes of this  series  acquired  or
redeemed  by the  Company  otherwise  than  through  [if  applicable,  insert  _
mandatory]  sinking  fund  payments  may  be  credited  against  subsequent  [if
applicable,  insert _ mandatory]  sinking fund payments otherwise required to be
made [if applicable, insert _ , in the inverse order in which they become due].]

      [If the Note is subject to redemption  of any kind,  insert _ In the event
of  redemption of this Note in part only, a new Note or Notes of this series and
of like tenor for the  unredeemed  portion  hereof will be issued in the name of
the Holder hereof upon the cancellation hereof.]

      [If applicable,  insert _ The Indenture contains provisions for defeasance
at any time of [the entire indebtedness of this Note] [or] [certain  restrictive
covenants and Events of Default with respect to this Note] [, in each case] upon
compliance with certain conditions set forth in the Indenture.]

      [If the Note is not an Original Issue Discount Note,  insert _ If an Event
of Default with  respect to Notes of this series shall occur and be  continuing,
the principal of the Notes of
                                       16
<PAGE>
this  series may be  declared  due and payable in the manner and with the effect
provided in the Indenture.]

      [If the Note is an Original Issue  Discount Note,  insert _ If an Event of
Default with respect to Notes of this series shall occur and be  continuing,  an
amount of  principal of the Notes of this series may be declared due and payable
in the manner and with the effect  provided in the Indenture.  Such amount shall
be equal to _ insert formula for determining the amount. Upon payment (i) of the
amount of  principal  so  declared  due and  payable and (ii) of interest on any
overdue  principal,  premium and  interest  (in each case to the extent that the
payment of such  interest  shall be legally  enforceable),  all of the Company's
obligations  in  respect of the  payment of the  principal  of and  premium  and
interest, if any, on the Notes of this series shall terminate.]

      [If the Note is issued  before the Release  Date,  insert _ If an Event of
Default with respect to Notes of this series shall occur and be continuing,  the
principal  of the Notes may be  declared  due and payable in the manner and with
the effect provided in the Indenture and, upon such declaration, the Trustee can
demand the  acceleration  of the payment of  principal of the Senior Note Series
 ...... Bonds as provided in the Indenture.]

      The Indenture permits,  with certain  exceptions as therein provided,  the
amendment  thereof and the  modification  of the rights and  obligations  of the
Company and the rights of the Holders of the Notes of each series to be affected
under the  Indenture at any time by the Company and the Trustee with the consent
of the  Holders  of a  majority  in  principal  amount  of the Notes at the time
Outstanding  of  each  series  to  be  affected.  The  Indenture  also  contains
provisions  permitting the Holders of specified  percentages in principal amount
of the Notes of each series at the time Outstanding, on behalf of the Holders of
all Notes of such  series,  to waive  compliance  by the  Company  with  certain
provisions of the  Indenture  and certain past defaults  under the Indenture and
their consequences.  Any such consent or waiver by the Holder of this Note shall
be conclusive  and binding upon such Holder and upon all future  Holders of this
Note and of any Note  issued  upon the  registration  of  transfer  hereof or in
exchange therefor or in lieu hereof,  whether or not notation of such consent or
waiver is made upon this Note.

      As provided in and subject to the provisions of the Indenture,  the Holder
of this Note shall not have the right to institute any  proceeding  with respect
to the  Indenture  or for the  appointment  of a receiver  or trustee or for any
other  remedy  thereunder,  unless such Holder shall have  previously  given the
Trustee  written  notice of a  continuing  Event of Default  with respect to the
Notes of this series,  the Holders of not less than 25% in  principal  amount of
the Notes of this series at the time Outstanding shall have made written request
to the Trustee to institute  proceedings  in respect of such Event of Default as
Trustee and offered the Trustee reasonable indemnity,  and the Trustee shall not
have  received  from the Holders of a majority in  principal  amount of Notes of
this series at the time Outstanding a direction  inconsistent with such request,
and shall  have  failed to  institute  any such  proceeding,  for 60 days  after
receipt of such notice, request and offer of indemnity.  The foregoing shall not
apply to any suit  instituted by the Holder of this Note for the  enforcement of
any payment of  principal  hereof or any premium or interest  hereon on or after
the respective due dates expressed herein.
                                       17
<PAGE>
      No reference  herein to the  Indenture and no provision of this Note or of
the  Indenture  shall alter or impair the  obligation  of the Company,  which is
absolute and unconditional, to pay the principal of and any premium and interest
on this Note at the times,  place and rate, and in the coin or currency,  herein
prescribed.

      As provided in the  Indenture and subject to certain  limitations  therein
set forth,  the transfer of this Note is registrable in the Note Register,  upon
surrender of this Note for  registration  of transfer at the office or agency of
the Company in any place where the  principal of and any premium and interest on
this Note are payable,  duly endorsed by, or accompanied by a written instrument
of transfer in form  satisfactory  to the  Company and the Note  Registrar  duly
executed by, the Holder hereof or his attorney duly  authorized in writing,  and
thereupon one or more new Notes of this series and of like tenor,  of authorized
denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.

      The Notes of this series are  issuable  only in  registered  form  without
coupons in  denominations  of $.......  and any integral  multiple  thereof.  As
provided in the Indenture and subject to certain  limitations therein set forth,
Notes of this series are exchangeable  for a like aggregate  principal amount of
Notes of this series and of like tenor of a different  authorized  denomination,
as requested by the Holder surrendering the same.

      No service charge shall be made for any such  registration  of transfer or
exchange,  but the Company may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

      Prior to due presentment of this Note for  registration  of transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose  name  this  Note is  registered  as the  owner  hereof  for all
purposes,  whether or not this Note be overdue,  and neither  the  Company,  the
Trustee nor any such agent shall be affected by notice to the contrary.

      All terms used in this Note which are defined in the Indenture  shall have
the meanings assigned to them in the Indenture.


SECTION 204.  Form of Legend for Global Notes.

      Unless  otherwise  specified as  contemplated by Section 301 for the Notes
evidenced thereby, every Global Note authenticated and delivered hereunder shall
bear a legend in substantially the following form:

THIS NOTE IS A GLOBAL  NOTE  WITHIN  THE  MEANING OF THE  INDENTURE  HEREINAFTER
REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE  THEREOF.
THIS NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A NOTE REGISTERED, AND NO
TRANSFER OF THIS NOTE IN WHOLE OR IN PART MAY BE REGISTERED,  IN THE NAME OF ANY
PERSON OTHER THAN SUCH  DEPOSITARY OR A NOMINEE  THEREOF,  EXCEPT IN THE LIMITED
CIRCUMSTANCES DESCRIBED IN THE INDENTURE.
                                       18
<PAGE>
SECTION 205.  Form of Trustee's Certificate of Authentication.

      The Trustee's certificates of authentication shall be in substantially the
following form:

                        CERTIFICATION OF AUTHENTICATION

      This is one of the Notes of the series  designated  therein referred to in
the within-mentioned Indenture.


Dated:                                                     THE BANK OF NEW YORK,
                                                                      As Trustee


                                                    By..........................
                                                            Authorized Signatory


                                  ARTICLE THREE

                                    THE NOTES


SECTION 301.  Amount Unlimited; Issuable in Series.

      The aggregate  principal  amount of Notes which may be  authenticated  and
delivered under this Indenture is unlimited.

      The Notes may be issued in one or more series.  There shall be established
by or pursuant to a Board  Resolution and, subject to Section 303, set forth, or
determined in the manner provided, in an Officers'  Certificate,  or established
in one or more indentures supplemental hereto, prior to the issuance of Notes of
any series,

         (1) the title of the Notes of the series (which shall  distinguish  the
   Notes of the series from Notes of any other series);

         (2) any limit upon the aggregate  principal  amount of the Notes of the
   series which may be authenticated  and delivered under this Indenture (except
   for Notes authenticated and delivered upon registration of transfer of, or in
   exchange  for, or in lieu of,  other Notes of the series  pursuant to Section
   304,  305,  306,  1006 or 1207 and except for any Notes  which,  pursuant  to
   Section  303,  are  deemed  never to have been  authenticated  and  delivered
   hereunder);

         (3) the Person to whom any  interest  on a Note of the series  shall be
   payable,  if other  than the  Person in whose  name that Note (or one or more
   Predecessor  Notes) is  registered  at the close of  business  on the Regular
   Record Date for such interest;

         (4) the date or dates on which the principal of any Notes of the series
   is payable;

         (5) the rate or  rates at which  any  Notes of the  series  shall  bear
   interest,  if any,  the date or dates  from  which  any such  interest  shall
   accrue, the Interest Payment Dates on
                                       19
<PAGE>
   which  any  such  interest   shall  be  payable,   the  manner  (if  any)  of
   determination  of such Interest Payment Dates and the Regular Record Date for
   any such interest payable on any Interest Payment Date;

         (6) the right,  if any, to extend the interest  payment periods and the
   duration of such extension;

         (7) the place or places  where the  principal  of and any  premium  and
   interest on any Notes of the series shall be payable;

         (8) the period or periods  within  which,  the price or prices at which
   and the terms and  conditions  upon  which  any  Notes of the  series  may be
   redeemed,  in whole or in part,  at the option of the  Company  and, if other
   than by a Board  Resolution,  the manner in which any election by the Company
   to redeem the Notes shall be evidenced;

         (9) the  obligation,  if any, of the Company to redeem or purchase  any
   Notes of the series  pursuant to any sinking fund or analogous  provisions or
   at the option of the Holder  thereof and the period or periods  within which,
   the price or prices at which  and the  terms and  conditions  upon  which any
   Notes of the series  shall be  redeemed  or  purchased,  in whole or in part,
   pursuant to such obligation;

         (10) if other than  denominations  of $1,000 and any integral  multiple
   thereof,  the  denominations  in  which  any  Notes  of the  series  shall be
   issuable;

         (11) if the amount of  principal  of or any  premium or interest on any
   Notes of the series may be determined  with reference to an index or pursuant
   to a formula, the manner in which such amounts shall be determined;

         (12) if other than the  currency of the United  States of America,  the
   currency,  currencies  or  currency  units in which the  principal  of or any
   premium  or  interest  on any Notes of the series  shall be  payable  and the
   manner of determining  the  equivalent  thereof in the currency of the United
   States of America for any purpose,  including for purposes of the  definition
   of "Outstanding" in Section 101;

         (13) if the principal of or any premium or interest on any Notes of the
   series  is to be  payable,  at the  election  of the  Company  or the  Holder
   thereof, in one or more currencies or currency units other than that or those
   in which such Notes are stated to be payable,  the  currency,  currencies  or
   currency  units in which the  principal of or any premium or interest on such
   Notes as to which such election is made shall be payable,  the periods within
   which and the terms and conditions upon which such election is to be made and
   the  amount  so  payable  (or the  manner  in  which  such  amount  shall  be
   determined);

         (14) if other than the entire principal amount thereof,  the portion of
   the  principal  amount of any Notes of the series which shall be payable upon
   declaration of acceleration of the Maturity thereof pursuant to Section 602;

         (15) if the  principal  amount  payable at the Stated  Maturity  of any
   Notes of the  series  will not be  determinable  as of any one or more  dates
   prior to the Stated Maturity,
                                       20
<PAGE>
   the   amount    which   shall  be deemed to be the  principal  amount of such
   Notes as of any such date for any purpose thereunder or hereunder,  including
   the principal amount thereof which shall be due and payable upon any Maturity
   other than the Stated  Maturity or which shall be deemed to be Outstanding as
   of any date prior to the Stated Maturity (or, in any such case, the manner in
   which such amount deemed to be the principal amount shall be determined);

         (16) if  applicable,  that  the  Notes of the  series,  in whole or any
   specified part, shall be defeasible  pursuant to Section 1402 or Section 1403
   or both such Sections and, if other than by a Board Resolution, the manner in
   which any election by the Company to defease such Notes shall be evidenced;

         (17) if  applicable,  that any Notes of the series shall be issuable in
   whole or in part in the form of one or more  Global  Notes and, in such case,
   the respective  Depositaries for such Global Notes, the form of any legend or
   legends  which  shall be borne by any such  Global  Note in addition to or in
   lieu of that set forth in Section 204 and any circumstances in addition to or
   in lieu of those set forth in Clause (2) of the last paragraph of Section 305
   in which any such Global Note may be  exchanged in whole or in part for Notes
   registered,  and any  transfer of such Global Note in whole or in part may be
   registered,  in the name or names of Persons  other than the  Depositary  for
   such Global Note or a nominee thereof;

         (18) if any Notes of the series  shall be issued  prior to the  Release
   Date, the designation of the series of Senior Note First Mortgage Bonds to be
   delivered  to the Trustee in  connection  with the issuance of such series of
   Notes;

         (19) any addition to or change in the Events of Default  which  applies
   to any Notes of the series and any change in the right of the  Trustee or the
   requisite  Holders of such Notes to declare the principal  amount thereof due
   and payable pursuant to Section 602;

         (20) any  addition to or change in the  covenants  set forth in Article
   Eleven which applies to Notes of the series; and

         (21)  any  other  terms  of  the  series  (which  terms  shall  not  be
   inconsistent  with the provisions of this  Indenture,  except as permitted by
   Section 1001(5)).

      All Notes of any one series shall be substantially  identical except as to
denomination and except as may otherwise be provided in or pursuant to the Board
Resolution  referred  to above  and  (subject  to  Section  303) set  forth,  or
determined  in the manner  provided,  in the Officers'  Certificate  referred to
above or in any such indenture supplemental hereto.

      If any of the terms of the series are established by action taken pursuant
to a Board Resolution,  a copy of an appropriate  record of such action shall be
certified  by  the  Secretary  or an  Assistant  Secretary  of the  Company  and
delivered  to  the  Trustee  at or  prior  to  the  delivery  of  the  Officers'
Certificate setting forth the terms of the series.
                                       21
<PAGE>
SECTION 302.  Denominations.

      The Notes of each series shall be issuable only in fully  registered  form
without  coupons  and  only in such  denominations  as  shall  be  specified  as
contemplated  by Section 301. In the absence of any such specified  denomination
with  respect  to the Notes of any  series,  the Notes of such  series  shall be
issuable in denominations of $1,000 and any integral multiple thereof.


SECTION 303.  Execution, Authentication, Delivery and Dating.

      Unless  otherwise  provided as contemplated by Section 301 with respect to
any series of Notes, the Notes shall be executed on behalf of the Company by its
Chairman of the Board,  its Vice Chairman of the Board,  its President or one of
its Vice  Presidents,  under its  corporate  seal affixed  thereto or reproduced
thereon  attested by its  Secretary  or one of its  Assistant  Secretaries.  The
signature of any of these officers on the Notes may be manual or facsimile.

      Notes bearing the manual or facsimile  signatures of individuals  who were
at any  time  the  proper  officers  of the  Company  shall  bind  the  Company,
notwithstanding  that such  individuals  or any of them have ceased to hold such
offices prior to the  authentication  and delivery of such Notes or did not hold
such offices at the date of such Notes.

      At any time and from time to time after the execution and delivery of this
Indenture,  the Company may deliver Notes of any series  executed by the Company
to the  Trustee  for  authentication,  together  with a  Company  Order  for the
authentication  and  delivery of such Notes and,  if prior to the Release  Date,
Senior Note First Mortgage Bonds of a series of Senior Note First Mortgage Bonds
conforming to the  requirements of Sections 401 and 402 hereof,  and the Trustee
in accordance with the Company Order shall  authenticate and deliver such Notes.
In  authenticating  such Notes,  and accepting the  additional  responsibilities
under this Indenture in relation to such Notes, the Trustee shall be entitled to
receive,  and (subject to Section 701) shall be fully protected in relying upon,
(1) if prior to the  Release  Date,  the  certificate  of an Expert  meeting the
requirements of Section 404(a) hereof and a series of Senior Note First Mortgage
Bonds  meeting the  requirements  of Section  403 hereof,  and (2) an Opinion of
Counsel stating,

         (A) if the form of such Notes has been  established  by or  pursuant to
   Board Resolution or in a supplemental  indenture as permitted by Section 201,
   that such form has been duly  authorized  by the Company and  established  in
   conformity with the provisions of this Indenture;

         (B) if the terms of such Notes have been duly authorized by the Company
   and  established  by or pursuant  to Board  Resolution  or in a  supplemental
   indenture as permitted by Section 301, that such terms have been  established
   in conformity with the provisions of this Indenture;

         (C) that such Notes,  when  authenticated  and delivered by the Trustee
   and  issued by the  Company  in the  manner  and  subject  to any  conditions
   specified  in such  Opinion of Counsel,  will have been duly issued under the
   Indenture and will constitute  valid and legally  binding  obligations of the
   Company,  entitled to the benefits provided by the Indenture, and enforceable
   in  accordance  with  their  terms,  subject to (a)  bankruptcy,  insolvency,
   fraudulent transfer, reorganization, moratorium and similar laws of general
                                       22
<PAGE>
   applicability   relating   to  or  affecting creditors' rights and to general
   equity  principles,  (b) the  necessity  for  compliance  with the  statutory
   procedural  rights governing the exercise of remedies by a secured  creditor,
   and (c) the qualification that certain waivers,  proecedures,  remedies,  and
   other provisions of such Notes and this Indenture may be unenforceable  under
   or limited by the laws of the State of Arizona; and

         (D) if prior to the Release Date,  that the Senior Note First  Mortgage
   Bonds of the  related  series of  Senior  Note  First  Mortgage  Bonds  being
   delivered  to the Trustee in  connection  with the issuance of such series of
   Notes  have  been  duly  authorized,  executed,  authenticated,  issued,  and
   delivered,  constitute  valid and legally binding  obligations of the Company
   entitled to the benefits and security provided by the First Mortgage,  except
   as the  same  may be  limited  by (a)  general  principles  of  equity  or by
   bankruptcy,  insolvency,  reorganization,  arrangement,  moratorium, or other
   laws or equitable  principles  relating to or affecting  the  enforcement  of
   creditors'  rights  generally or the enforcement of the security  provided by
   the First  Mortgage,  (b) the  necessity  for  compliance  with the statutory
   procedural  requirements  governing  the  exercise  of  remedies by a secured
   creditor,  and  (c)  the  qualification  that  certain  waivers,  procedures,
   remedies,  and other  provisions of the Senior Note First  Mortgage Bonds and
   the First  Mortgage may be  unenforceable  under or limited by the law of the
   State of Arizona; and that such Senior Note First Mortgage Bonds are entitled
   to the benefits provided by the First Mortgage, equally and ratably, with all
   First  Mortgage  Bonds and other  Senior Note First  Mortgage  Bonds (if any)
   outstanding thereunder, except as to sinking fund provisions; and

         (E) that the Company's  execution and delivery of this Indenture,  such
   Notes,  such First  Mortgage,  and any such Senior Note First  Mortgage Bonds
   have been duly authorized by the Arizona Corporation  Commission (the "ACC"),
   the  ACC  had  jurisdiction  in  the  premises,   and  no  further  approval,
   authorization,  or consent of any other  public board or body is necessary to
   the validity of such  execution and delivery of this  Indenture,  such Notes,
   such First Mortgage, and any such Senior Note First Mortgage Bonds, except as
   may be required  under state  securities  or blue sky laws,  as to which laws
   such counsel shall not be required to express an opinion.

If such  form or terms  have  been so  established,  the  Trustee  shall  not be
required to authenticate  such Notes if the issue of such Notes pursuant to this
Indenture will affect the Trustee's own rights,  duties or immunities  under the
Notes  and this  Indenture  or  otherwise  in a manner  which is not  reasonably
acceptable to the Trustee.

      Notwithstanding  the  provisions  of  Section  301  and of  the  preceding
paragraph, if all Notes of a series are not to be originally issued at one time,
it shall  not be  necessary  to  deliver  the  Officers'  Certificate  otherwise
required  pursuant to Section  301 or the  Company  Order and Opinion of Counsel
otherwise  required  pursuant  to such  preceding  paragraph  at or prior to the
authentication of each Note of such series if such documents are delivered at or
prior to the  authentication  upon  original  issuance of the first Note of such
series to be issued.

      Each Note shall be dated the date of its authentication.

      No Note shall be entitled to any benefit under this  Indenture or be valid
or obligatory for any purpose unless there appears on such Note a certificate of
authentication  substantially  in the form  provided for herein  executed by the
Trustee by manual  signature of an authorized  signatory,  and such  certificate
upon any Note shall be conclusive  evidence,  and the only  evidence,  that such
Note has been duly authenticated and delivered hereunder.
                                       23
<PAGE>
Notwithstanding  the foregoing,  if any Note shall have been  authenticated  and
delivered  hereunder  but never issued and sold by the Company,  and the Company
shall deliver such Note to the Trustee for  cancellation  as provided in Section
309, for all purposes of this  Indenture such Note shall be deemed never to have
been  authenticated  and delivered  hereunder and shall never be entitled to the
benefits of this Indenture.


SECTION 304.  Temporary Notes.

      Pending the preparation of definitive Notes of any series, the Company may
execute,  and upon Company  Order the Trustee  shall  authenticate  and deliver,
temporary Notes which are printed,  lithographed,  typewritten,  mimeographed or
otherwise produced, in any authorized  denomination,  substantially of the tenor
of the  definitive  Notes  in lieu of  which  they  are  issued  and  with  such
appropriate  insertions,  omissions,  substitutions  and other variations as the
officers executing such Notes may determine,  as evidenced by their execution of
such Notes.

      If  temporary  Notes of any  series are  issued,  the  Company  will cause
definitive Notes of that series to be prepared without unreasonable delay. After
the preparation of definitive Notes of such series,  the temporary Notes of such
series shall be exchangeable  for definitive Notes of such series upon surrender
of the temporary  Notes of such series at the office or agency of the Company in
a Place of Payment for that series, without charge to the Holder. Upon surrender
for  cancellation of any one or more temporary Notes of any series,  the Company
shall  execute  and the  Trustee  shall  authenticate  and  deliver in  exchange
therefor  one or more  definitive  Notes of the same series,  of any  authorized
denominations  and of like  tenor  and  aggregate  principal  amount.  Until  so
exchanged,  the temporary  Notes of any series shall in all respects be entitled
to the same benefits under this Indenture as definitive Notes of such series and
tenor.


SECTION 305.  Registration, Registration of Transfer and Exchange.

      The Company  shall cause to be kept at the  Corporate  Trust Office of the
Trustee a  register  (the  register  maintained  in such  office or in any other
office or agency of the  Company in a Place of Payment  being  herein  sometimes
referred  to as the  "Note  Register")  in  which,  subject  to such  reasonable
regulations as it may prescribe,  the Company shall provide for the registration
of Notes and of  transfers  of Notes.  The  Trustee  is hereby  appointed  "Note
Registrar" for the purpose of registering Notes and transfers of Notes as herein
provided.

      Upon surrender for registration of transfer of any Note of a series at the
office or agency of the  Company  in a Place of  Payment  for that  series,  the
Company shall execute,  and the Trustee shall  authenticate and deliver,  in the
name of the designated  transferee or transferees,  one or more new Notes of the
same series,  of any  authorized  denominations  and of like tenor and aggregate
principal amount.

      At the option of the  Holder,  Notes of any series  may be  exchanged  for
other Notes of the same  series,  of any  authorized  denominations  and of like
tenor  and  aggregate  principal  amount,  upon  surrender  of the  Notes  to be
exchanged at such office or agency.  Whenever any Notes are so  surrendered  for
exchange,  the Company shall  execute,  and the Trustee shall  authenticate  and
deliver, the Notes which the Holder making the exchange is entitled to receive.
                                       24
<PAGE>
      All Notes  issued upon any  registration  of transfer or exchange of Notes
shall be the valid  obligations  of the Company,  evidencing  the same debt, and
entitled to the same benefits  under this  Indenture,  as the Notes  surrendered
upon such registration of transfer or exchange.

      Every Note presented or surrendered  for  registration  of transfer or for
exchange  shall (if so required by the Company or the Trustee) be duly endorsed,
or be accompanied by a written  instrument of transfer in form  satisfactory  to
the Company and the Note Registrar  duly executed,  by the Holder thereof or his
attorney duly authorized in writing.

      No  service  charge  shall be made for any  registration  of  transfer  or
exchange of Notes,  but the Company may require  payment of a sum  sufficient to
cover any tax or other  governmental  charge  that may be imposed in  connection
with any  registration  of transfer or exchange of Notes,  other than  exchanges
pursuant to Section 304, 1006 or 1207 not involving any transfer.

      If the Notes of any series (or of any series and  specified  tenor) are to
be  redeemed,  the Company  shall not be  required  (A) to issue,  register  the
transfer  of or  exchange  any  Notes  of that  series  (or of that  series  and
specified tenor, as the case may be) during a period beginning at the opening of
business 15 days before the day of the mailing of a notice of  redemption of any
such Notes  selected for  redemption  and ending at the close of business on the
day of such mailing,  or (B) to register the transfer of or exchange any Note so
selected for redemption in whole or in part,  except the  unredeemed  portion of
any Note being redeemed in part.

      The  provisions of Clauses (1), (2), (3) and (4) below shall apply only to
Global Notes:

         (1) Each  Global  Note  authenticated  under  this  Indenture  shall be
   registered in the name of the Depositary designated for such Global Note or a
   nominee  thereof and  delivered to such  Depositary  or a nominee  thereof or
   custodian therefor,  and each such Global Note shall constitute a single Note
   for all purposes of this Indenture.

         (2)  Notwithstanding  any other provision in this Indenture,  no Global
   Note  may be  exchanged  in whole or in part  for  Notes  registered,  and no
   transfer of a Global Note in whole or in part may be registered,  in the name
   of any Person  other than the  Depositary  for such  Global Note or a nominee
   thereof  unless (A) such  Depositary  (i) has notified the Company that it is
   unwilling  or unable to continue as  Depositary  for such Global Note or (ii)
   has ceased to be a clearing  agency  registered  under the Exchange  Act, (B)
   there shall have  occurred and be continuing an Event of Default with respect
   to such Global Note or (C) there shall exist such  circumstances,  if any, in
   addition  to or in lieu of the  foregoing  as have  been  specified  for this
   purpose as contemplated by Section 301.

         (3)  Subject to Clause (2) above,  any  exchange  of a Global  Note for
   other Notes may be made in whole or in part, and all Notes issued in exchange
   for a Global Note or any portion thereof shall be registered in such names as
   the Depositary for such Global Note shall direct.

         (4)  Every  Note  authenticated  and  delivered  upon  registration  of
   transfer  of, or in exchange  for or in lieu of, a Global Note or any portion
   thereof, whether pursuant to this
                                       25
<PAGE>
   Section,    Section   304,   306,  1006  or  1207 or  otherwise,   shall   be
   authenticated  and  delivered  in the form of,  and shall be, a Global  Note,
   unless  such  Note is  registered  in the  name of a  Person  other  than the
   Depositary for such Global Note or a nominee thereof.


SECTION 306.  Mutilated, Destroyed, Lost and Stolen Notes.

      If any mutilated  Note is  surrendered  to the Trustee,  the Company shall
execute and the Trustee shall  authenticate  and deliver in exchange  therefor a
new Note of the same series and of like tenor and principal amount and bearing a
number not contemporaneously outstanding.

      If there shall be delivered to the Company and the Trustee (i) evidence to
their  satisfaction of the destruction,  loss or theft of any Note and (ii) such
security  or  indemnity  as may be required by them to save each of them and any
agent of either of them harmless,  then, in the absence of notice to the Company
or the Trustee that such Note has been  acquired by a bona fide  purchaser,  the
Company shall execute and the Trustee shall authenticate and deliver, in lieu of
any such  destroyed,  lost or stolen  Note, a new Note of the same series and of
like  tenor and  principal  amount and  bearing a number  not  contemporaneously
outstanding.

      In case any such mutilated,  destroyed,  lost or stolen Note has become or
is about to become due and payable,  the Company in its discretion may,  instead
of issuing a new Note, pay such Note.

      Upon the  issuance  of any new Note under this  Section,  the  Company may
require the payment of a sum  sufficient to cover any tax or other  governmental
charge that may be imposed in relation thereto and any other expenses (including
the fees and expenses of the Trustee) connected therewith.

      Every new Note of any series  issued  pursuant to this  Section in lieu of
any  destroyed,  lost or stolen Note shall  constitute  an  original  additional
contractual  obligation of the Company,  whether or not the  destroyed,  lost or
stolen Note shall be at any time enforceable by anyone, and shall be entitled to
all the benefits of this Indenture equally and proportionately  with any and all
other Notes of that series duly issued hereunder.

      The  provisions of this Section are  exclusive and shall  preclude (to the
extent lawful) all other rights and remedies with respect to the  replacement or
payment of mutilated, destroyed, lost or stolen Notes.


SECTION 307.  Payment of Interest; Interest Rights Preserved.

      Except as otherwise  provided as  contemplated by Section 301 with respect
to any series of Notes, interest on any Note which is payable, and is punctually
paid or duly  provided  for, on any  Interest  Payment Date shall be paid to the
Person in whose name that Note (or one or more Predecessor  Notes) is registered
at the close of business on the Regular Record Date for such interest.
                                       26
<PAGE>
      Any  interest  on any  Note of any  series  which is  payable,  but is not
punctually  paid or duly  provided  for, on any  Interest  Payment  Date (herein
called  "Defaulted  Interest") shall forthwith cease to be payable to the Holder
on the relevant  Regular  Record Date by virtue of having been such Holder,  and
such  Defaulted  Interest  may be paid by the  Company,  at its election in each
case, as provided in Clause (1) or (2) below:

         (1) The Company may elect to make payment of any Defaulted  Interest to
   the  Persons in whose  names the Notes of such  series  (or their  respective
   Predecessor  Notes)  are  registered  at the close of  business  on a Special
   Record Date for the payment of such Defaulted Interest,  which shall be fixed
   in the following  manner.  The Company shall notify the Trustee in writing of
   the amount of  Defaulted  Interest  proposed  to be paid on each Note of such
   series and the date of the proposed payment, and at the same time the Company
   shall  deposit  with the  Trustee an amount of money  equal to the  aggregate
   amount  proposed  to be paid in respect of such  Defaulted  Interest or shall
   make  arrangements  satisfactory to the Trustee for such deposit prior to the
   date of the proposed  payment,  such money when deposited to be held in trust
   for the benefit of the Persons entitled to such Defaulted Interest as in this
   Clause  provided.  Thereupon the Trustee shall fix a Special  Record Date for
   the payment of such  Defaulted  Interest which shall be not more than 15 days
   and not less than 10 days prior to the date of the  proposed  payment and not
   less than 10 days  after the  receipt  by the  Trustee  of the  notice of the
   proposed  payment.  The  Trustee  shall  promptly  notify the Company of such
   Special Record Date and, in the name and at the expense of the Company, shall
   cause  notice of the  proposed  payment of such  Defaulted  Interest  and the
   Special  Record  Date  therefor  to be given to each  Holder of Notes of such
   series in the manner set forth in Section 106, not less than 10 days prior to
   such Special  Record Date.  Notice of the proposed  payment of such Defaulted
   Interest and the Special  Record Date  therefor  having been so mailed,  such
   Defaulted  Interest  shall be paid to the Persons in whose names the Notes of
   such series (or their  respective  Predecessor  Notes) are  registered at the
   close of business on such Special  Record Date and shall no longer be payable
   pursuant to the following Clause (2).

         (2) The Company may make payment of any Defaulted Interest on the Notes
   of  any  series  in  any  other  lawful  manner  not  inconsistent  with  the
   requirements  of any  securities  exchange on which such Notes may be listed,
   and upon such notice as may be required by such  exchange,  if,  after notice
   given by the Company to the Trustee of the proposed  payment pursuant to this
   Clause, such manner of payment shall be deemed practicable by the Trustee.

      Subject to the foregoing  provisions of this Section,  each Note delivered
under this Indenture upon  registration  of transfer of or in exchange for or in
lieu of any other Note shall  carry the rights to  interest  accrued and unpaid,
and to accrue, which were carried by such other Note.


SECTION 308.  Persons Deemed Owners.

      Prior to due  presentment  of a Note for  registration  of  transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose name such Note is  registered  as the owner of such Note for the
purpose of receiving payment of
                                       27
<PAGE>
principal  of and any premium and  (subject to Section 307) any interest on such
Note and for all other purposes whatsoever, whether or not such Note be overdue,
and neither the Company, the Trustee nor any agent of the Company or the Trustee
shall be affected by notice to the contrary.


SECTION 309.  Cancellation.

      All Notes surrendered for payment, redemption, registration of transfer or
exchange or for credit against any sinking fund payment shall, if surrendered to
any Person  other than the  Trustee,  be  delivered  to the Trustee and shall be
promptly cancelled by it. The Company may at any time deliver to the Trustee for
cancellation any Notes previously  authenticated  and delivered  hereunder which
the Company may have acquired in any manner  whatsoever,  and may deliver to the
Trustee (or to any other Person for  delivery to the  Trustee) for  cancellation
any Notes  previously  authenticated  hereunder which the Company has not issued
and sold, and all Notes so delivered shall be promptly cancelled by the Trustee.
No  Notes  shall  be  authenticated  in lieu  of or in  exchange  for any  Notes
cancelled as provided in this  Section,  except as  expressly  permitted by this
Indenture.  All  cancelled  Notes held by the  Trustee  shall be  disposed of as
directed by a Company Order;  provided,  however,  that the Trustee shall not be
required to destroy such cancelled Notes.


SECTION 310.  Computation of Interest.

      Except as otherwise  specified as contemplated by Section 301 for Notes of
any series,  interest on the Notes of each series shall be computed on the basis
of a 360-day year of twelve 30-day months.


SECTION 311.  CUSIP Numbers.

         The  Company  in issuing  the Notes may use  "CUSIP"  numbers  (if then
generally in use),  and, if so, the Trustee shall use "CUSIP" numbers in notices
of  redemption as a  convenience  to Holders;  provided that any such notice may
state  that no  representation  is made as to the  correctness  of such  numbers
either as printed on the Notes or as contained in any notice of a redemption and
that reliance may be placed only on the other identification  numbers printed on
the Notes,  and any such  redemption  shall not be  affected by any defect in or
omission of such numbers.


SECTION 312.   Payments on Senior Note First Mortgage Bonds.

      Subject to Article Five and Article Fourteen hereof,  all payments made by
the Company to the Trustee on a series of Senior Note First Mortgage Bonds shall
be applied by the Trustee to pay, when due,  principal of, premium,  if any, and
interest  on the related  series of Notes and,  to the extent so applied,  shall
satisfy the Company's  obligations  on such Notes.  The Company shall pay to the
Trustee  principal of, premium,  if any, and interest on a series of Senior Note
First Mortgage Bonds in a manner and at a time that will enable the
                                       28
<PAGE>
Trustee to make payments when due, of the  principal  of,  premium,  if any, and
interest on the related series of Notes.


                                  ARTICLE FOUR

                        SENIOR NOTE FIRST MORTGAGE BONDS

SECTION 401.  Acceptance of Senior Note First Mortgage Bonds.

         At or prior to the time of issuance of a series of Notes  hereunder  at
any time prior to the Release Date, the Company shall deliver to the Trustee for
the benefit of the Holders of the Notes as described in Section 403 hereof,  and
the Trustee shall accept therefor,  Senior Note First Mortgage Bonds of a series
of Senior Note First  Mortgage Bonds not  theretofore  delivered to the Trustee,
registered  in the name of the Trustee and  conforming  to the  requirements  of
Section 402 hereof.


SECTION 402.  Terms of Senior Note First Mortgage Bonds.

         Each  series of Senior  Note  First  Mortgage  bonds  delivered  to the
Trustee  pursuant  to Section  401  hereof  shall have the same rate or rates of
interest (or interest  calculated in the same manner),  interest  payment dates,
maturity and redemption provisions, and shall be in the same aggregate principal
amount, as the related series of Notes being issued.


SECTION 403.  Senior Note First Mortgage Bonds as Security for Notes.

         Until the Release Date and subject to Article Five and Article Fourteen
hereof,  Senior  Note First  Mortgage  Bonds  delivered  to the  Trustee for the
benefit of the Holders of a related  series of Notes shall serve as security for
any and all  obligations  of the  Company  under such  related  series of Notes,
including,  but not limited to (1) the full and prompt  payment of the principal
and  premium,  if any,  on such Notes when and as the same shall  become due and
payable in accordance  with the terms and  provisions  of this  Indenture or the
Notes either at the Stated Maturity  thereof,  upon acceleration of the maturity
thereof or upon redemption,  and (2) the full and prompt payment of any interest
on such Notes when and as the same shall  become due and  payable in  accordance
with the terms and provisions of this Indenture or the Notes.

         Notwithstanding  anything in this  Indenture to the contrary,  from and
after the Release  Date,  the  obligation  of the Company to make  payment  with
respect to the principal of and premium, if any, and interest on the Senior Note
First Mortgage Bonds shall be deemed satisfied and discharged as provided in the
supplemental  trust indenture or indentures to the First Mortgage  creating such
Senior First Mortgage Bonds and the Senior Note First Mortgage Bonds shall cease
to secure in any manner Notes theretofore or subsequently issued. From and after
the Release Date, all Notes,  whether theretofore or subsequently  issued, shall
be unsecured,  and any  conditions to the issuance of Notes that refer or relate
to Senior Note First Mortgage Bonds or the First Mortgage shall be inapplicable.
Following  the Release Date,  the Company  shall cause the First  Mortgage to be
closed and the
                                       29
<PAGE>
Company shall not issue any additional First Mortgage Bonds or Senior Note First
Mortgage Bonds under the First Mortgage. Notice of the occurrence of the Release
Date  shall be given by the  Trustee  to the  Holders of the Notes in the manner
provided  for in Section  106  hereof  not later than 30 days after the  Company
notifies the Trustee of the occurrence of the Release Date.


SECTION 404.  Fair Value Certificate.

         (a) Upon the  delivery  by the  Company to the  Trustee of Senior  Note
First  Mortgage  Bonds  pursuant  to  Section  401  hereof,  the  Company  shall
simultaneously  therewith  deliver to the Trustee a certificate of an Expert (1)
stating  that it is  familiar  with the  provisions  of such  Senior  Note First
Mortgage Bonds and of this  Indenture;  (2)  identifying  such Senior Note First
Mortgage  Bonds;  (3)  identifying  the  Notes  being  issued  contemporaneously
therewith  and (4)  stating  the fair value to the  Company of such  Senior Note
First Mortgage  Bonds. If the fair value to the Company of the Senior Note First
Mortgage  Bonds so delivered,  as described in the  certificate  to be delivered
pursuant to this Section 404(a), both (l) is equal to or exceeds (A) $25,000 and
(B) 1% of the principal amount of the Notes  outstanding at the date of delivery
of such Senior Note First Mortgage Bonds and (2) together with the fair value to
the Company, as described in the certificates delivered pursuant to this Section
404(a),  of all other Senior Note First Mortgage Bonds  delivered to the Trustee
since the commencement of the then current calendar year, is equal to or exceeds
10% of the principal amount of the Notes  outstanding at the date of delivery of
such Senior Note First Mortgage  Bonds,  then the  certificate  required by this
Section 404(a) shall (1) be delivered by an independent Expert and (2) shall, in
addition  to the  certifications  described  above,  state the fair value to the
Company of all  Senior  Note  First  Mortgage  Bonds  delivered  to the  Trustee
pursuant to Section 401 hereof since the  commencement  of the then current year
as to which a certificate was not delivered by an independent Expert.

         (b) If Senior Note First Mortgage Bonds are delivered or surrendered to
the  Company  pursuant  to  Section  407  or  409  hereof,   the  Company  shall
simultaneously  therewith  deliver to the Trustee a certificate of an Expert (1)
stating  that it is  familiar  with the  provisions  of such  Senior  Note First
Mortgage Bonds and of this  Indenture,  (2)  identifying  such Senior Note First
Mortgage Bonds,  (3) if applicable,  identifying  the Notes,  the payment of the
interest on and principal of which has been  discharged  hereunder,  (4) stating
that such  delivery or surrender  will not impair the lien of this  Indenture in
contravention  of the  provisions  of this  Indenture.  If, prior to the Release
Date,  the fair value of the Senior Note First  Mortgage  Bonds so delivered and
surrendered,  as described in the  certificate to be delivered  pursuant to this
Section  404(b),  both (l) is equal to or exceeds  (A) $25,000 and (B) 1% of the
principal  amount of the Notes  outstanding at the date of delivery or surrender
of such Senior Note First  Mortgage  Bonds and (2) together with the fair value,
as described in the certificates  delivered  pursuant to this Section 404(b), of
all other  Senior  Note  First  Mortgage  Bonds  released  from the lien of this
Indenture since the  commencement of the then current calendar year, is equal to
or exceeds 10% of the principal  amount of the Notes  outstanding at the date of
delivery  or  surrender  of such  Senior  Note First  Mortgage  Bonds,  then the
certificate required by this Section 404(b) shall be delivered by an independent
Expert.
                                       30
<PAGE>
         If, in connection  with a delivery or surrender of  outstanding  Senior
Note First  Mortgage Bonds provided for in subsection (a) or (b) of this Section
404,  as the case may be,  the  Company  provides  to the  trustee an Opinion of
Counsel stating that the certificate  described by the applicable  subsection is
not  required by law,  such  certificate  shall not be required to be  delivered
hereunder in connection with such delivery or surrender.


SECTION 405.  Senior Note First Mortgage Bonds Held by the Trustee.

         The Trustee,  as a Holder of Senior Note First  Mortgage  Bonds,  shall
attend a meeting of holders of First  Mortgage Bonds under the First Mortgage as
to which it receives due notice,  or, at its option,  shall deliver its proxy in
connection  therewith.  Either at such  meeting,  or otherwise  where consent of
holders  of First  Mortgage  Bonds  issued  under the First  Mortgage  is sought
without a meeting,  the Trustee shall vote all of the Senior Note First Mortgage
Bonds held by it, or shall consent or withhold its consent with respect thereto,
as directed by the  Holders of not less than a majority in  aggregate  principal
amount of the Outstanding Notes;  provided,  however, that the Trustee shall not
vote as such holder of a particular  series of Senior Note First  Mortgage Bonds
in favor of, or give its consent to, any action which, in the Trustee's opinion,
would  materially  adversely  affect such  series of Senior Note First  Mortgage
Bonds in a manner not shared  generally by all other Senior Note First  Mortgage
Bonds,  except  upon  notification  by the Trustee to the Holders of the related
series of Outstanding  Notes of such proposal and consent thereto of the holders
of not less than a majority in  aggregate  principal  amount of the  Outstanding
Notes of such series.


SECTION 406.  No Transfer of Senior Note First Mortgage Bonds; Exception.

         Except as required to effect an assignment to a successor trustee under
this  Indenture  or pursuant  to Section 407 or Section 409 hereof,  the Trustee
shall not sell,  assign or transfer the Senior Note First Mortgage Bonds and the
Company shall issue stop transfer  instructions to the Mortgage  Trustee and any
transfer agent under the First Mortgage to effect  compliance  with this Section
406.


SECTION 407.  Delivery to the Company of all Senior Note First Mortgage Bonds.

         When the  obligation of the Company to make payment with respect to the
principal of and premium, if any, and interest on the Senior Note First Mortgage
Bonds shall be satisfied or deemed  satisfied  pursuant to Section 403,  Section
501 or Article Fourteen hereof,  the Trustee shall,  upon written request of the
Company and receipt of the certificate of the Expert described in Section 404(b)
hereof (if such certificate is then required by Section 404(b) hereof),  deliver
to the Company  without  charge  therefor all of the Senior Note First  Mortgage
Bonds, together with such appropriate  instruments of transfer or release as may
be reasonably  requested by the Company.  All Senior Note First  Mortgage  Bonds
delivered to the Company in accordance  with this Section 407 shall be delivered
by the Company to the First Mortgage Trustee for cancellation.
                                       31
<PAGE>
SECTION 408.  Further Assurances.

         The Company, at its own expense,  shall do such further lawful acts and
things,  and execute  and  deliver  such  additional  conveyances,  assignments,
assurances,   agreements,  financing  statements  and  instruments,  as  may  be
necessary in order to further assign, assure, perfect and confirm to the Trustee
its  security  interest  in  the  Senior  Note  First  Mortgage  Bonds  and  for
maintaining, protecting and preserving such security interest.


SECTION 409.  Exchange and Surrender of Senior Note First Mortgage Bonds.

         At any time upon receipt of a Company Order at the written direction of
the  Company,  the  Trustee  shall  surrender  to the Company all or part of the
Senior  Note First  Mortgage  Bonds in exchange  for Senior Note First  Mortgage
Bonds equal in aggregate  principal amounts to, in different  denominations than
but of the same  series and with all other terms  identical  to, the Senior Note
First Mortgage Bonds so surrendered to the Company.  In addition,  at any time a
Note shall  cease to be entitled  to any lien,  benefit or  security  under this
Indenture  pursuant to Section 501 or Article Fourteen hereof, the Trustee shall
surrender an equal  principal  amount of Senior Note First Mortgage Bonds of the
related series to the Company for cancellation. The Trustee shall, together with
such Senior Note First Mortgage Bonds,  deliver to the Company such  appropriate
instruments of transfer or release as the Company may reasonably request.  Prior
to the surrender required by this paragraph,  the Trustee shall receive from the
Company the  following,  and  (subject  to Section  701  hereof)  shall be fully
protected  in  relying  upon,  (a) an  Officer's  Certificate  stating  (i)  the
aggregate  outstanding  principal amount of the Senior Note First Mortgage bonds
of the series surrendered by the Trustee, after giving effect to such surrender,
(ii) the aggregate  Outstanding principal amount of the related series of Notes,
(iii) that the surrender of the Senior Note First Mortgage Bonds will not result
in any  default  under  this  Indenture,  and (iv) that any  Senior  Note  First
Mortgage  Bonds to be received in  exchange  for the Senior Note First  Mortgage
Bonds being surrendered comply with the provisions of this Section.

         The Company  shall not be permitted to cause the  surrender or exchange
of all or any part of a series of Senior Note First Mortgage Bonds  contemplated
in this Section, if, after such surrender or exchange, the aggregate outstanding
principal  amount of the  related  series of Notes  would  exceed the  aggregate
outstanding  principal amount of such series of Senior Note First Mortgage Bonds
held by the  Trustee.  Any Senior  Note First  Mortgage  Bonds  received  by the
Company  pursuant to this Section 409 shall be delivered to the Mortgage Trustee
for cancellation.
                                       32
<PAGE>
                                  ARTICLE FIVE

                           SATISFACTION AND DISCHARGE


SECTION 501.  Satisfaction and Discharge of Indenture.

      This  Indenture  shall upon Company  Request cease to be of further effect
(except as to any surviving  rights of  registration  of transfer or exchange of
Notes herein  expressly  provided for),  and the Trustee,  at the expense of the
Company,  shall  execute  proper  instruments  acknowledging   satisfaction  and
discharge of this Indenture, when

      (1)   either

            (A) all Notes  theretofore  authenticated  and delivered (other than
      (i) Notes  which have been  destroyed,  lost or stolen and which have been
      replaced  or paid as  provided  in  Section  306 and (ii)  Notes for whose
      payment money has  theretofore  been  deposited in trust or segregated and
      held in trust by the  Company  and  thereafter  repaid to the  Company  or
      discharged  from such  trust,  as  provided  in  Section  1103)  have been
      delivered to the Trustee for cancellation; or

            (B) all such Notes not  theretofore  delivered  to the  Trustee  for
      cancellation

                  (i) have become due and payable, or

                  (ii) will  become  due and  payable at their  Stated  Maturity
            within one year, or

                  (iii) are to be called  for  redemption  within one year under
            arrangements satisfactory to the Trustee for the giving of notice of
            redemption  by the Trustee in the name,  and at the expense,  of the
            Company,

      and the Company, in the case of (i), (ii) or (iii) above, has deposited or
      caused to be  deposited  with the  Trustee as trust funds in trust for the
      purpose  money in an amount  sufficient  to pay and  discharge  the entire
      indebtedness  on such Notes not  theretofore  delivered to the Trustee for
      cancellation,  for  principal  and any premium and interest to the date of
      such  deposit (in the case of Notes which have become due and  payable) or
      to the Stated Maturity or Redemption Date, as the case may be;

      (2) the  Company  has paid or  caused to be paid all  other  sums  payable
   hereunder by the Company; and

      (3) the Company has delivered to the Trustee an Officers'  Certificate and
   an  Opinion   of   Counsel,  each  stating   that  all  conditions  precedent
   herein  provided  for  relating  to  the  satisfaction  and discharge of this
   Indenture have been complied with.

      Notwithstanding  the  satisfaction  and discharge of this  Indenture,  the
obligations of the Company to the Trustee under Section 707, the  obligations of
the Company to any  Authenticating  Agent under  Section 714 and, if money shall
have been deposited with the Trustee
                                       33
<PAGE>
pursuant to subclause (B) of Clause (1) of this Section,  the obligations of the
Trustee under Section 502 and the last paragraph of Section 1103 shall survive.

      If the Notes are deemed paid and  discharged  pursuant to this Section 501
or defeased pursuant to Article Fourteen,  the obligation of the Company to make
payment  with respect to the  principal of and premium,  if any, and interest on
the Senior Note First  Mortgage  Bonds shall be  satisfied  and  discharged,  as
provided in the supplemental trust indenture or indentures to the First Mortgage
creating  such  Senior  Note  First  Mortgage  Bonds and the  Senior  Note First
Mortgage Bonds shall cease to secure the Notes in any manner.

      If the Company  shall have paid or caused to be paid the  principal of and
premium,  if any,  and  interest  on any Note,  as and when the same  shall have
become due and payable or the Company  shall have  delivered  to the Trustee for
cancellation  any outstanding  Note, such Note shall cease to be entitled to any
lien,  benefit  or  security  under  this  Indenture.  Upon a Note of any series
ceasing to be entitled to any lien,  benefit or security  under this  Indenture,
the  obligation  of the Company to make payment with respect to principal of and
premium,  if any,  and interest on a principal  amount of the related  series of
Senior  Note First  Mortgage  Bonds equal to the  principal  amount of such Note
shall be satisfied and  discharged  and such portion of the principal  amount of
such  Senior  Note First  Mortgage  Bonds shall cease to secure the Notes in any
manner.


SECTION 502.  Application of Trust Money.

      Subject to the provisions of the last paragraph of Section 1103, all money
deposited  with the  Trustee  pursuant to Section 501 shall be held in trust and
applied  by it,  in  accordance  with  the  provisions  of the  Notes  and  this
Indenture,  to  the  payment,  either  directly  or  through  any  Paying  Agent
(including  the  Company  acting as its own  Paying  Agent) as the  Trustee  may
determine, to the Persons entitled thereto, of the principal and any premium and
interest for whose payment such money has been deposited with the Trustee.


                                   ARTICLE SIX

                                    REMEDIES


SECTION 601.  Events of Default.

      "Event of  Default",  wherever  used herein  with  respect to Notes of any
series,  means any one of the  following  events  (whatever  the reason for such
Event of Default and whether it shall be voluntary or involuntary or be effected
by operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):

         (1) default in the payment of any interest upon any Note of that series
   when it becomes due and payable, and continuance of such default for a period
   of 60 days; or
                                       34
<PAGE>
         (2)  default in the payment of the  principal  of or any premium on any
   Note of that series at its  Maturity  and  continuance  of such default for 5
   days; or

         (3) default in the deposit of any sinking fund payment, when and as due
   by the terms of a Note of that series and  continuance  of such default for 5
   days; or

         (4) default in the performance,  or breach, of any covenant or warranty
   of the Company in this Indenture (other than a covenant or warranty a default
   in  whose   performance   or  whose  breach  is  elsewhere  in  this  Section
   specifically  dealt  with  or  which  has  expressly  been  included  in this
   Indenture  solely for the benefit of series of Notes other than that series),
   and continuance of such default or breach for a period of 90 days after there
   has been  given,  by  registered  or  certified  mail,  to the Company by the
   Trustee or to the  Company  and the  Trustee by the  Holders of a majority in
   principal  amount of the  Outstanding  Notes of that series a written  notice
   specifying such default or breach and requiring it to be remedied and stating
   that such notice is a "Notice of Default" hereunder; or

         (5) prior to the  Release  Date,  a Default  (as  defined  in the First
   Mortgage)  has occurred and is  continuing,  and the  Mortgage  Trustee,  the
   Company  or Holders of at least 25% in  principal  amount of the  outstanding
   Notes shall have given written notice thereof to the Trustee;

         (6) the entry by a court having  jurisdiction  in the premises of (A) a
   decree or order for relief in respect of the Company in an  involuntary  case
   or proceeding under any applicable  Federal or State bankruptcy,  insolvency,
   reorganization  or other  similar law or (B) a decree or order  adjudging the
   Company a bankrupt or  insolvent,  or approving as properly  filed a petition
   seeking  reorganization,  arrangement,  adjustment  or  composition  of or in
   respect  of the  Company  under  any  applicable  Federal  or State  law,  or
   appointing a custodian, receiver, liquidator, assignee, trustee, sequestrator
   or other similar  official of the Company or of any  substantial  part of its
   property,  or ordering the winding up or liquidation of its affairs,  and the
   continuance  of any such decree or order for relief or any such other  decree
   or order unstayed and in effect for a period of 90 consecutive days;

         (7) the  commencement  by the Company of a voluntary case or proceeding
   under any applicable Federal or State bankruptcy, insolvency,  reorganization
   or other similar law or of any other case or  proceeding to be  adjudicated a
   bankrupt or insolvent, or the consent by it to the entry of a decree or order
   for relief in respect of the  Company in an  involuntary  case or  proceeding
   under any applicable Federal or State bankruptcy, insolvency,  reorganization
   or other similar law or to the  commencement  of any bankruptcy or insolvency
   case or proceeding against it, or the filing by it of a petition or answer or
   consent  seeking  reorganization  or relief under any  applicable  Federal or
   State law,  or the  consent by it to the  filing of such  petition  or to the
   appointment  of or taking  possession by a custodian,  receiver,  liquidator,
   assignee,  trustee,  sequestrator or other similar official of the Company or
   of any substantial part of its property, or the making by it of an assignment
   for the  benefit  of  creditors,  or the  admission  by it in  writing of its
   inability  to pay its debts  generally  as they  become due, or the taking of
   corporate action by the Company in furtherance of any such action; or

         (8) any other Event of Default  provided  with respect to Notes of that
   series.
                                       35
<PAGE>
SECTION 602.  Acceleration of Maturity; Rescission and Annulment.

      If an Event of  Default  (other  than an Event  of  Default  specified  in
Section  601(6)  or  601(7))  with  respect  to Notes of any  series at the time
Outstanding occurs and is continuing, then in every such case the Trustee or the
Holders of a  majority  in  principal  amount of the  Outstanding  Notes of that
series may declare the principal  amount of all the Notes of that series (or, if
any Notes of that series are Original Issue Discount Notes,  such portion of the
principal  amount of such Notes as may be specified by the terms  thereof) to be
due and payable  immediately,  by a notice in writing to the Company (and to the
Trustee  if given by  Holders),  and upon any such  declaration  such  principal
amount (or specified  amount) shall become  immediately  due and payable.  If an
Event of Default  specified in Section 601(6) or 601(7) with respect to Notes of
any series at the time Outstanding occurs, the principal amount of all the Notes
of that  series (or, if any Notes of that  series are  Original  Issue  Discount
Notes, such portion of the principal amount of such Notes as may be specified by
the terms thereof)  shall  automatically,  and without any  declaration or other
action on the part of the  Trustee or any  Holder,  become  immediately  due and
payable. Upon such Notes becoming immediately due and payable, by declaration or
otherwise,  pursuant to any of the foregoing provisions of this Section 602, the
Trustee shall  immediately  file with the Mortgage  Trustee a written demand for
the  acceleration  of the payment of principal of all Senior Note First Mortgage
Bonds  relating to such series of  outstanding  Notes pursuant to the applicable
provisions of the supplemental  indenture to the First Mortgage relating to such
Senior Note First Mortgage Bonds.

      At any time after such a declaration of acceleration with respect to Notes
of any series has been made and before a judgment  or decree for  payment of the
money due has been  obtained  by the  Trustee  as  hereinafter  in this  Article
provided,  and prior to the receipt by the Trustee from the Mortgage  Trustee of
an  irrevocable,   valid  and  unconditional   notice  to  the  Trustee  of  the
acceleration of the payment of principal, by declaration or otherwise, of all of
the Senior Note First  Mortgage  Bonds  relating  to such  series of Notes,  the
related Event of Default and its consequences (including,  if given, the written
demand for the  acceleration of the payment of principal of all such Senior Note
First Mortgage Bonds) will be  automatically  waived,  resulting in an automatic
rescission and annulment of the acceleration of the Notes if

      (1) the Company has paid or deposited with the Trustee a sum sufficient to
pay

            (A) all overdue interest on all Notes of that series,

            (B) the  principal  of (and  premium,  if any, on) any Notes of that
      series  which  have  become  due  otherwise  than by such  declaration  of
      acceleration  and any  interest  thereon  at the rate or rates  prescribed
      therefor in such Notes,

            (C) to the extent that payment of such interest is lawful,  interest
      upon  overdue  interest at the rate or rates  prescribed  therefor in such
      Notes, and

            (D) all sums  paid or  advanced  by the  Trustee  hereunder  and the
      reasonable  compensation,  expenses,  disbursements  and  advances  of the
      Trustee, its agents and counsel;

   and
                                       36
<PAGE>
         (2) all Events of Default with  respect to Notes of that series,  other
   than the  non-payment  of the  principal  of Notes of that series  which have
   become  due  solely by such  declaration  of  acceleration,  have been  cured
   (including  any Defaults (as defined in the First  Mortgage)  under the First
   Mortgage,  as  evidenced by notice  thereof  received by the Trustee from the
   Mortgage  Trustee)  or waived as  provided  in Section 613 or under the First
   Mortgage.

No such  rescission  shall  affect  any  subsequent  default or impair any right
consequent thereon.


SECTION 603.  Collection of Indebtedness and Suits for Enforcement by Trustee.

         The Company covenants that if

         (1)  default is made in the  payment of any  interest  on any Note when
   such interest becomes due and payable and such default continues for a period
   of 60 days, or

         (2) default is made in the payment of the principal of (or premium,  if
   any, on) any Note at the Maturity  thereof and such default  continues  for a
   period of 5 days,

the Company will, upon demand of the Trustee,  pay to it, for the benefit of the
Holders of such Notes,  the whole  amount then due and payable on such Notes for
principal  and any premium and interest  and, to the extent that payment of such
interest  shall be legally  enforceable,  interest on any overdue  principal and
premium and on any overdue interest, at the rate or rates prescribed therefor in
such Notes, and, in addition thereto, such further amount as shall be sufficient
to cover  the  costs  and  expenses  of  collection,  including  the  reasonable
compensation,  expenses,  disbursements and advances of the Trustee,  its agents
and counsel.

      If an Event of Default with  respect to Notes of any series  occurs and is
continuing, the Trustee may in its discretion proceed to protect and enforce its
rights  (including,  prior to the Release Date,  any rights that the Trustee may
have as a holder of Senior Note First Mortgage  Bonds of the series  relating to
the series of such  Notes) and the rights of the Holders of Notes of such series
by  such  appropriate  judicial  proceedings  as the  Trustee  shall  deem  most
effectual  to protect  and  enforce any such  rights,  whether for the  specific
enforcement  of any  covenant or  agreement  in this  Indenture or in aid of the
exercise of any power granted herein, or to enforce any other proper remedy.


SECTION 604.  Trustee May File Proofs of Claim.

      In case of any judicial  proceeding  relative to the Company (or any other
obligor upon the Notes),  its property or its  creditors,  the Trustee  shall be
entitled and empowered, by intervention in such proceeding or otherwise, to take
any and all actions  authorized  under the Trust  Indenture Act in order to have
claims of the Holders and the Trustee (including, prior to the Release Date, any
claims of the Trustee as holder of Senior Note First Mortgage  Bonds) allowed in
any such proceeding.  In particular,  the Trustee shall be authorized to collect
and  receive any moneys or other  property  payable or  deliverable  on any such
claims  and to  distribute  the same;  and any  custodian,  receiver,  assignee,
trustee,  liquidator,  seque-strator  or  other  similar  official  in any  such
judicial proceeding is hereby authorized by each Holder to make such payments to
the Trustee  and, in the event that the Trustee  shall  consent to the making of
such payments directly to the Holders, to pay to the Trustee any amount
                                       37
<PAGE>
due it for the reasonable compensation,  expenses, disbursements and advances of
the Trustee, its agents and counsel, and any other amounts due the Trustee under
Section 707.

      No provision of this Indenture shall be deemed to authorize the Trustee to
authorize  or  consent to or accept or adopt on behalf of any Holder any plan of
reorganization,  arrangement,  adjustment or composition  affecting the Notes or
the rights of any Holder  thereof or to authorize the Trustee to vote in respect
of the claim of any Holder in any such proceeding;  provided,  however, that the
Trustee  may, on behalf of the  Holders,  vote for the  election of a trustee in
bankruptcy or similar  official and be a member of a creditors' or other similar
committee.


SECTION 605.  Trustee May Enforce Claims Without Possession of Notes.

      All rights of action and claims  under this  Indenture or the Notes may be
prosecuted  and  enforced by the Trustee  without the  possession  of any of the
Notes or the production thereof in any proceeding relating thereto, and any such
proceeding instituted by the Trustee shall be brought in its own name as trustee
of an express trust, and any recovery of judgment shall, after provision for the
payment of the reasonable compensation,  expenses, disbursements and advances of
the Trustee,  its agents and counsel,  be for the ratable benefit of the Holders
of the Notes in respect of which such judgment has been recovered.


SECTION 606.  Application of Money Collected.

      Any money  collected  by the  Trustee  pursuant to this  Article  shall be
applied in the following  order,  at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal or any premium
or interest,  upon  presentation  of the Notes and the  notation  thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

      FIRST:  To the payment of all amounts due the Trustee under Section 707;

      SECOND: To the payment of the amounts then due and unpaid for principal of
   and any  premium  and  interest  on the Notes in  respect of which or for the
   benefit of which such money has been collected,  ratably,  without preference
   or  priority  of any kind,  according  to the amounts due and payable on such
   Notes for principal and any premium and interest, respectively; and

      THIRD: To the payment of the balance,  if any, to the Company or any other
   Person or Persons legally entitled thereto.


SECTION 607.  Limitation on Suits.

      No Holder of any Note of any series shall have any right to institute  any
proceeding,  judicial or otherwise,  with respect to this Indenture,  or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless
                                       38
<PAGE>
         (1) such Holder has previously given written notice to the Trustee of a
   continuing Event of Default with respect to the Notes of that series;

         (2) the  Holders  of not  less  than  25% in  principal  amount  of the
   Outstanding  Notes of that  series  shall  have made  written  request to the
   Trustee to institute  proceedings  in respect of such Event of Default in its
   own name as Trustee hereunder;

         (3) such  Holder or  Holders  have  offered to the  Trustee  reasonable
   indemnity  against  the costs,  expenses  and  liabilities  to be incurred in
   compliance with such request;

         (4) the Trustee for 60 days after its receipt of such  notice,  request
   and offer of indemnity has failed to institute any such proceeding; and

         (5) no direction  inconsistent with such written request has been given
   to the  Trustee  during  such  60-day  period by the Holders of a majority in
   principal amount of the Outstanding Notes of that series;

it being  understood and intended that no one or more of such Holders shall have
any right in any manner  whatever by virtue of, or by availing of, any provision
of this  Indenture to affect,  disturb or  prejudice  the rights of any other of
such Holders,  or to obtain or to seek to obtain priority or preference over any
other of such  Holders or to enforce any right under this  Indenture,  except in
the manner herein  provided and for the equal and ratable benefit of all of such
Holders.


SECTION 608.  Unconditional Right of Holders to Receive Principal,
   Premium and Interest.

      Notwithstanding  any other provision in this Indenture,  the Holder of any
Note shall have the  right,  which is  absolute  and  unconditional,  to receive
payment of the  principal  of and any  premium  and  (subject  to  Section  307)
interest on such Note on the respective Stated Maturities expressed in such Note
(or, in the case of redemption,  on the  Redemption  Date) and to institute suit
for the  enforcement of any such payment,  and such rights shall not be impaired
without the consent of such Holder.


SECTION 609.  Restoration of Rights and Remedies.

      If the Trustee or any Holder has  instituted any proceeding to enforce any
right or remedy under this Indenture and such  proceeding has been  discontinued
or abandoned for any reason, or has been determined  adversely to the Trustee or
to such Holder,  then and in every such case,  subject to any  determination  in
such  proceeding,  the  Company,  the Trustee and the Holders  shall be restored
severally and  respectively to their former  positions  hereunder and thereafter
all rights and remedies of the Trustee and the Holders shall  continue as though
no such proceeding had been instituted.
                                       39
<PAGE>
SECTION 610.  Rights and Remedies Cumulative.

      Except as otherwise provided with respect to the replacement or payment of
mutilated, destroyed, lost or stolen Notes in the last paragraph of Section 306,
no right or remedy  herein  conferred  upon or reserved to the Trustee or to the
Holders is intended  to be  exclusive  of any other  right or remedy,  and every
right and remedy shall,  to the extent  permitted by law, be  cumulative  and in
addition to every other right and remedy  given  hereunder  or now or  hereafter
existing at law or in equity or  otherwise.  The  assertion or employment of any
right or remedy  hereunder,  or  otherwise,  shall not  prevent  the  concurrent
assertion or employment of any other appropriate right or remedy.


SECTION 611.  Delay or Omission Not Waiver.

      No delay or  omission  of the  Trustee  or of any  Holder  of any Notes to
exercise any right or remedy accruing upon any Event of Default shall impair any
such right or remedy or  constitute  a waiver of any such Event of Default or an
acquiescence therein.  Every right and remedy given by this Article or by law to
the Trustee or to the Holders may be exercised  from time to time,  and as often
as may be deemed  expedient,  by the Trustee or by the Holders,  as the case may
be.


SECTION 612.  Control by Holders.

      The Holders of a majority in principal amount of the Outstanding  Notes of
any  series  shall  have the  right to  direct  the  time,  method  and place of
conducting any proceeding for any remedy available to the Trustee, or exercising
any trust or power  conferred on the Trustee,  with respect to the Notes of such
series, provided that

         (1) such  direction  shall not be in  conflict  with any rule of law or
   with this Indenture,

         (2) the Trustee may take any other action  deemed proper by the Trustee
   which is not inconsistent with such direction, and

         (3) subject to the  provisions  of Section 701, the Trustee  shall have
   the right to  decline  to follow any such  direction  if the  Trustee in good
   faith shall, by a Responsible  Officer or Officers of the Trustee,  determine
   that the  proceeding  so  directed  would  involve  the  Trustee in  personal
   liability.


SECTION 613.  Waiver of Past Defaults.

      The  Holders  of not less  than a  majority  in  principal  amount  of the
Outstanding Notes of any series may on behalf of the Holders of all the Notes of
such series waive any past default hereunder with respect to such series and its
consequences, except a default

         (1) in the  payment of the  principal  of or any premium or interest on
   any Note of such series, or
                                       40
<PAGE>
         (2) in respect of a covenant or provision  hereof  which under  Article
   Ten cannot be modified  or amended  without the consent of the Holder of each
   Outstanding Note of such series affected.

      Upon any such waiver,  such default shall cease to exist, and any Event of
Default arising  therefrom shall be deemed to have been cured, for every purpose
of this  Indenture;  but no such waiver shall extend to any  subsequent or other
default or impair any right consequent thereon.


SECTION 614.  Undertaking for Costs.

      In any  suit  for the  enforcement  of any  right  or  remedy  under  this
Indenture,  or in any suit against the Trustee for any action taken, suffered or
omitted by it as Trustee, a court may require any party litigant in such suit to
file an  undertaking to pay the costs of such suit, and may assess costs against
any such party  litigant,  in the manner and to the extent provided in the Trust
Indenture  Act;  provided that neither this Section nor the Trust  Indenture Act
shall be deemed to authorize any court to require such an undertaking or to make
such an assessment in any suit instituted by the Company or the Trustee.


SECTION 615.  Waiver of Usury, Stay or Extension Laws.

      The Company  covenants  (to the extent that it may lawfully do so) that it
will not at any time insist upon, or plead, or in any manner whatsoever claim or
take the benefit or  advantage  of, any usury,  stay or  extension  law wherever
enacted,  now or at any time hereafter in force,  which may affect the covenants
or the performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such law
and  covenants  that it will not hinder,  delay or impede the  execution  of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.


                                  ARTICLE SEVEN

                                   THE TRUSTEE


SECTION 701.  Certain Duties and Responsibilities.

      The duties and responsibilities of the Trustee shall be as provided by the
Trust Indenture Act, and no implied  covenants or obligations shall be read into
the Indenture against the Trustee.  The phrase "default (as such term is defined
in such  indenture)"  as it appears in Section  315 of the Trust  Indenture  Act
shall mean an Event of Default  with  respect to a series of Notes  which  shall
have occurred and is continuing.  Notwithstanding the foregoing, no provision of
this  Indenture  shall  require  the  Trustee to expend or risk its own funds or
otherwise incur any financial  liability in the performance of any of its duties
hereunder,  or in the exercise of any of its rights or powers,  if it shall have
reasonable  grounds  for  believing  that  repayment  of such funds or  adequate
indemnity  against  such risk or  liability  is not  reasonably  assured  to it.
Whether or not therein expressly so provided,  every provision of this Indenture
relating to the conduct or affecting the liability of or affording protection to
the Trustee shall be subject to the provisions of this Section.
                                       41
<PAGE>
SECTION 702.  Notice of Defaults.

      If a default  occurs  hereunder  with respect to Notes of any series,  the
Trustee  shall give the Holders of Notes of such series  notice of such  default
known to the Trustee as and to the extent  provided by the Trust  Indenture Act;
provided, however, that in the case of any default of the character specified in
Section  601(4) with respect to Notes of such series,  no such notice to Holders
shall be given  until at least 30 days  after the  occurrence  thereof.  For the
purpose of this Section,  the term "default"  means any event which is, or after
notice or lapse of time or both would  become,  an Event of Default with respect
to Notes of such series.


SECTION 703.  Certain Rights of Trustee.

      Subject to the provisions of Section 701:

         (1) the Trustee may rely and shall be protected in acting or refraining
   from acting upon any resolution, certificate, statement, instrument, opinion,
   report, notice, request,  direction,  consent, order, bond, debenture,  note,
   other evidence of indebtedness  or other paper or document  believed by it to
   be  genuine  and to have been  signed or  presented  by the  proper  party or
   parties;

         (2) any request or direction of the Company  mentioned  herein shall be
   sufficiently  evidenced  by a  Company  Request  or  Company  Order,  and any
   resolution  of the Board of Directors  shall be  sufficiently  evidenced by a
   Board Resolution;

         (3) whenever in the  administration of this Indenture the Trustee shall
   deem it  desirable  that a matter be proved or  established  prior to taking,
   suffering  or  omitting  any action  hereunder,  the  Trustee  (unless  other
   evidence be herein specifically  prescribed) may, in the absence of bad faith
   on its part, rely upon an Officers' Certificate;

         (4) the Trustee  may  consult  with  counsel of its  selection  and the
   advice of such  counsel or any Opinion of Counsel  shall be full and complete
   authorization  and  protection  in respect of any action  taken,  suffered or
   omitted by it hereunder in good faith and in reliance thereon;

         (5) the Trustee  shall be under no  obligation  to exercise  any of the
   rights or powers  vested in it by this  Indenture at the request or direction
   of any of the Holders  pursuant to this Indenture,  unless such Holders shall
   have  offered to the Trustee  reasonable  security or  indemnity  against the
   costs,  expenses and liabilities  which might be incurred by it in compliance
   with such request or direction;

         (6) the Trustee shall not be bound to make any  investigation  into the
   facts  or  matters  stated  in  any   resolution,   certificate,   statement,
   instrument,  opinion,  report, notice,  request,  direction,  consent, order,
   bond,  debenture,  note,  other  evidence of  indebtedness  or other paper or
   document,  but the Trustee, in its discretion,  may make such further inquiry
   or  investigation  into such facts or matters as it may see fit,  and, if the
   Trustee shall  determine to make such further  inquiry or  investigation,  it
   shall be entitled to examine the books,  records and premises of the Company,
   personally or by agent or attorney;
                                       42
<PAGE>
         (7) the Trustee may  execute any of the trusts or powers  hereunder  or
   perform  any duties  hereunder  either  directly  or by or through  agents or
   attorneys  and the Trustee  shall not be  responsible  for any  misconduct or
   negligence on the part of any agent or attorney appointed with due care by it
   hereunder; and

         (8) except as other provided in Section  601(4),  the Trustee shall not
   be charged with  knowledge of any default or Event of Default  unless  either
   (i) a  Responsible  Officer of the Trustee  assigned to the  Corporate  Trust
   Department  of the Trustee (or any  successor  division or  department of the
   Trustee) shall have actual  knowledge of the default or Event of Default,  or
   (ii) written notice of such default or Event of Default shall have been given
   to the  Trustee  by the  Company,  any other  obligor  on the Notes or by any
   Holder  of such  Notes or, in the case of an Event of  Default  described  in
   Section  601(5)  by the  Mortgage  Trustee  or  Holders  of at  least  25% in
   principal amount of the Outstanding Notes.


SECTION 704.  Not Responsible for Recitals or Issuance of Notes.

      The  recitals  contained  herein  and in the Notes,  except the  Trustee's
certificates of authentication, shall be taken as the statements of the Company,
and neither the Trustee nor any Authenticating  Agent assumes any responsibility
for their  correctness.  The Trustee makes no representations as to the validity
or sufficiency  of this  Indenture or of the Notes or as to the value,  title or
validity of any Senior Note First Mortgage Bonds or other securities at any time
pledged or deposited  with the Trustee  hereunder or as to the security  offered
thereby or hereby.  Neither the Trustee  nor any  Authenticating  Agent shall be
accountable  for the use or  application by the Company of Notes or the proceeds
thereof or of any moneys paid to the Company  under any  provision  hereof.  The
Trustee shall not be  responsible  for recording or filing this  Indenture,  any
indenture  supplemented hereto or any financing or continuation statement in any
public office or elsewhere at any time or times.


SECTION 705.  May Hold Notes.

      The  Trustee,  any  Authenticating  Agent,  any  Paying  Agent,  any  Note
Registrar  or any other agent of the  Company,  in its  individual  or any other
capacity,  may become the owner or pledgee of Notes and, subject to Sections 608
and 613, may otherwise  deal with the Company with the same rights it would have
if it were not Trustee,  Authenticating  Agent,  Paying Agent, Note Registrar or
such other agent.


SECTION 706.  Money Held in Trust.

      Money held by the Trustee in trust  hereunder need not be segregated  from
other funds except to the extent  required by law. The Trustee shall be under no
liability for interest on any money received by it hereunder except as otherwise
agreed in writing with the Company.
                                       43
<PAGE>
SECTION 707.  Compensation and Reimbursement.

      The Company agrees

         (1) to pay to the Trustee from time to time such  compensation as shall
   be agreed to in writing  between the Company and the Trustee for all services
   rendered  by it  hereunder  (which  compensation  shall not be limited by any
   provision  of law in regard to the  compensation  of a trustee  of an express
   trust);

         (2) except as otherwise  expressly  provided  herein,  to reimburse the
   Trustee  upon its  request for all  reasonable  expenses,  disbursements  and
   advances  incurred or made by the Trustee in accordance with any provision of
   this Indenture  (including the reasonable  compensation  and the expenses and
   disbursements   of  its  agents  and  counsel),   except  any  such  expense,
   disbursement  or  advance as may be  attributable  to its  negligence  or bad
   faith; and

         (3) to indemnify the Trustee for, and to hold it harmless against,  any
   loss,  liability or expense incurred  without  negligence or bad faith on its
   part,  arising out of or in connection with the acceptance or  administration
   of the trust or  trusts  hereunder,  including  the  costs  and  expenses  of
   defending  itself  against  any claim or  liability  in  connection  with the
   exercise or performance of any of its powers or duties hereunder.

      The  Trustee  shall have a lien prior to the Notes upon all  property  and
funds held by it hereunder  for any amount owing it or any  predecessor  Trustee
pursuant to this Section 707, except with respect to funds held in trust for the
benefit of the Holders of particular Notes.

      Without limiting any rights available to the Trustee under applicable law,
when the Trustee incurs expenses or renders services in connection with an Event
of  Default  specified  in  Section  601(6)  or  Section  601(7),  the  expenses
(including  the  reasonable  charges  and  expenses  of  its  counsel)  and  the
compensation   for  the  services  are  intended  to   constitute   expenses  of
administration  under any applicable Federal or State bankruptcy,  insolvency or
other similar law.

      The  provisions  of this Section  shall  survive the  termination  of this
Indenture.


SECTION 708.  Conflicting Interests.

      If the  Trustee has or shall  acquire a  conflicting  interest  within the
meaning of the Trust  Indenture  Act, the Trustee  shall either  eliminate  such
interest or resign,  to the extent and in the manner provided by, and subject to
the provisions  of, the Trust  Indenture Act and this  Indenture.  To the extent
permitted  by such Act,  the Trustee  shall not be deemed to have a  conflicting
interest by virtue of being a trustee under this Indenture with respect to Notes
of more than one series.
                                       44
<PAGE>
SECTION 709.  Corporate Trustee Required; Eligibility.

      There  shall at all  times be one (and only one)  Trustee  hereunder  with
respect to the Notes of each series, which may be Trustee hereunder for Notes of
one or more  other  series.  Each  Trustee  shall be a Person  that is  eligible
pursuant to the Trust  Indenture  Act to act as such and has a combined  capital
and surplus of at least  $50,000,000.  If any such Person  publishes  reports of
condition  at least  annually,  pursuant  to law or to the  requirements  of its
supervising or examining authority, then for the purposes of this Section and to
the extent  permitted  by the Trust  Indenture  Act,  the  combined  capital and
surplus of such Person shall be deemed to be its combined capital and surplus as
set forth in its most recent  report of condition so  published.  If at any time
the Trustee  with  respect to the Notes of any series shall cease to be eligible
in accordance with the provisions of this Section,  it shall resign  immediately
in the manner and with the effect hereinafter specified in this Article.


SECTION 710.  Resignation and Removal; Appointment of Successor.

      No resignation or removal of the Trustee and no appointment of a successor
Trustee  pursuant to this Article shall become effective until the acceptance of
appointment  by  the  successor   Trustee  in  accordance  with  the  applicable
requirements of Section 711.

      The  Trustee  may  resign at any time with  respect to the Notes of one or
more series by giving written  notice thereof to the Company.  If the instrument
of acceptance by a successor Trustee required by Section 711 shall not have been
delivered  to the  Trustee  within 30 days  after the  giving of such  notice of
resignation,   the  resigning  Trustee  may  petition  any  court  of  competent
jurisdiction  for the  appointment  of a successor  Trustee  with respect to the
Notes of such series.

      The  Trustee  may be removed at any time with  respect to the Notes of any
series  by  Act  of  the  Holders  of a  majority  in  principal  amount  of the
Outstanding Notes of such series, delivered to the Trustee and to the Company.

      If at any time:

         (1) the  Trustee  shall fail to comply with  Section 708 after  written
   request  therefor  by the  Company  or by any Holder who has been a bona fide
   Holder of a Note for at least six months, or

         (2) the Trustee shall cease to be eligible  under Section 709 and shall
   fail to resign after written  request  therefor by the Company or by any such
   Holder, or

         (3) the Trustee shall become incapable of acting or shall be adjudged a
   bankrupt or insolvent  or a receiver of the Trustee or of its property  shall
   be  appointed  or any  public  officer  shall  take  charge or control of the
   Trustee or of its  property  or affairs  for the  purpose of  rehabilitation,
   conservation or liquidation,

then,  in any such case,  (A) the Company by a Board  Resolution  may remove the
Trustee with respect to all Notes, or (B) subject to Section 614, any Holder who
has been a bona
                                       45
<PAGE>
fide  Holder of a Note for at least six months may, on behalf of himself and all
others similarly situated,  petition any court of competent jurisdiction for the
removal  of the  Trustee  with  respect  to all Notes and the  appointment  of a
successor Trustee or Trustees.

      If the Trustee shall resign,  be removed or become incapable of acting, or
if a vacancy shall occur in the office of Trustee for any cause, with respect to
the Notes of one or more  series,  the  Company,  by a Board  Resolution,  shall
promptly  appoint a successor  Trustee or Trustees  with respect to the Notes of
that or those series (it being understood that any such successor Trustee may be
appointed  with  respect  to the Notes of one or more or all of such  series and
that at any time there  shall be only one Trustee  with  respect to the Notes of
any  particular  series) and shall comply with the  applicable  requirements  of
Section  711.  If,   within  one  year  after  such   resignation,   removal  or
incapability,  or the  occurrence  of such  vacancy,  a successor  Trustee  with
respect to the Notes of any series shall be appointed by Act of the Holders of a
majority in principal  amount of the Outstanding  Notes of such series delivered
to the Company and the  retiring  Trustee,  the  successor  Trustee so appointed
shall,  forthwith upon its acceptance of such appointment in accordance with the
applicable  requirements  of Section  711,  become the  successor  Trustee  with
respect to the Notes of such series and to that extent  supersede  the successor
Trustee  appointed by the Company.  If no successor  Trustee with respect to the
Notes of any series  shall have been so  appointed by the Company or the Holders
and accepted  appointment in the manner  required by Section 711, any Holder who
has been a bona fide  Holder of a Note of such  series  for at least six  months
may, on behalf of himself and all others similarly situated,  petition any court
of  competent  jurisdiction  for the  appointment  of a successor  Trustee  with
respect to the Notes of such series.

      The Company shall give notice of each  resignation and each removal of the
Trustee  with  respect  to the Notes of any  series  and each  appointment  of a
successor  Trustee  with  respect to the Notes of any  series to all  Holders of
Notes of such series in the manner  provided in Section  106.  Each notice shall
include  the name of the  successor  Trustee  with  respect to the Notes of such
series and the address of its Corporate Trust Office.


SECTION 711.  Acceptance of Appointment by Successor.

      In case of the appointment  hereunder of a successor  Trustee with respect
to  all  Notes,  every  such  successor  Trustee  so  appointed  shall  execute,
acknowledge and deliver to the Company and to the retiring Trustee an instrument
accepting  such  appointment,  and thereupon the  resignation  or removal of the
retiring Trustee shall become effective and such successor Trustee,  without any
further  act,  deed or  conveyance,  shall  become  vested  with all the rights,
powers,  trusts and duties of the retiring Trustee,  including rights, title and
interest in the Senior  Note First  Mortgage  Bonds;  but, on the request of the
Company or the successor  Trustee,  such retiring Trustee shall, upon payment of
its charges,  execute and deliver an instrument  transferring  to such successor
Trustee all the rights, powers and trusts of the retiring Trustee and shall duly
assign,  transfer and deliver to such  successor  Trustee all property and money
held by such retiring Trustee hereunder.

      In case of the appointment  hereunder of a successor  Trustee with respect
to the Notes of one or more (but not all)  series,  the  Company,  the  retiring
Trustee  and each  successor  Trustee  with  respect to the Notes of one or more
series shall execute and deliver an
                                       46
<PAGE>
indenture  supplemental  hereto wherein each successor Trustee shall accept such
appointment and which (1) shall contain such provisions as shall be necessary or
desirable to transfer and confirm to, and to vest in, each successor Trustee all
the rights,  powers,  trusts and duties of the retiring  Trustee with respect to
the Notes of that or those  series to which the  appointment  of such  successor
Trustee relates, (2) if the retiring Trustee is not retiring with respect to all
Notes,  shall contain such provisions as shall be deemed  necessary or desirable
to confirm  that all the  rights,  powers,  trusts  and  duties of the  retiring
Trustee  with  respect  to the  Notes of that or those  series  as to which  the
retiring  Trustee is not  retiring  shall  continue to be vested in the retiring
Trustee,  and (3) shall add to or change any of the provisions of this Indenture
as shall be necessary to provide for or  facilitate  the  administration  of the
trusts  hereunder by more than one  Trustee,  it being  understood  that nothing
herein  or  in  such  supplemental  indenture  shall  constitute  such  Trustees
co-trustees  of the same trust and that each such Trustee  shall be trustee of a
trust or trusts hereunder  separate and apart from any trust or trusts hereunder
administered  by any other such Trustee;  and upon the execution and delivery of
such  supplemental  indenture the resignation or removal of the retiring Trustee
shall become  effective to the extent  provided  therein and each such successor
Trustee,  without any further act, deed or conveyance,  shall become vested with
all the rights,  powers,  trusts and duties of the retiring Trustee with respect
to the Notes of that or those series to which the  appointment of such successor
Trustee relates;  but, on request of the Company or any successor Trustee,  such
retiring  Trustee  shall duly  assign,  transfer  and deliver to such  successor
Trustee all  property and money held by such  retiring  Trustee  hereunder  with
respect to the Notes of that or those  series to which the  appointment  of such
successor Trustee relates.

      Upon request of any such successor Trustee,  the Company shall execute any
and all  instruments  for more fully and certainly  vesting in and confirming to
such  successor  Trustee all such rights,  powers and trusts  referred to in the
first or second preceding paragraph, as the case may be.

      No successor  Trustee shall accept its  appointment  unless at the time of
such  acceptance  such  successor  Trustee shall be qualified and eligible under
this Article.


SECTION 712.  Merger, Conversion, Consolidation or Succession to Business.

      Any corporation  into which the Trustee may be merged or converted or with
which it may be  consolidated,  or any  corporation  resulting  from any merger,
conversion  or  consolidation  to which  the  Trustee  shall be a party,  or any
corporation  succeeding to all or substantially all the corporate trust business
of the Trustee,  shall be the successor of the Trustee hereunder,  provided such
corporation  shall be  otherwise  qualified  and  eligible  under this  Article,
without the  execution  or filing of any paper or any further act on the part of
any of the parties hereto. In case any Notes shall have been authenticated,  but
not  delivered,  by the  Trustee  then  in  office,  any  successor  by  merger,
conversion  or  consolidation  to such  authenticating  Trustee  may adopt  such
authentication and deliver the Notes so authenticated with the same effect as if
such successor Trustee had itself authenticated such Notes.
                                       47
<PAGE>
SECTION 713.  Preferential Collection of Claims Against Company.

      If and when the  Trustee  shall be or become a creditor of the Company (or
any  other  obligor  upon  the  Notes),  the  Trustee  shall be  subject  to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).


SECTION 714.  Appointment of Authenticating Agent.

      The Trustee may appoint an Authenticating  Agent or Agents with respect to
one or more series of Notes which  shall be  authorized  to act on behalf of the
Trustee to authenticate Notes of such series issued upon exchange,  registration
of transfer or partial  redemption thereof or pursuant to Section 306, and Notes
so  authenticated  shall be entitled to the benefits of this Indenture and shall
be valid and  obligatory  for all  purposes as if  authenticated  by the Trustee
hereunder.  Wherever  reference is made in this Indenture to the  authentication
and  delivery  of  Notes  by  the  Trustee  or  the  Trustee's   certificate  of
authentication,  such reference  shall be deemed to include  authentication  and
delivery on behalf of the Trustee by an  Authenticating  Agent and a certificate
of authentication  executed on behalf of the Trustee by an Authenticating Agent.
Each  Authenticating  Agent shall be  acceptable to the Company and shall at all
times be a corporation organized and doing business under the laws of the United
States of America,  any State  thereof or the District of  Columbia,  authorized
under such laws to act as  Authenticating  Agent,  having a combined capital and
surplus of not less than  $50,000,000  and subject to supervision or examination
by Federal or State authority. If such Authenticating Agent publishes reports of
condition  at least  annually,  pursuant to law or to the  requirements  of said
supervising or examining  authority,  then for the purposes of this Section, the
combined capital and surplus of such Authenticating  Agent shall be deemed to be
its  combined  capital  and  surplus as set forth in its most  recent  report of
condition so published. If at any time an Authenticating Agent shall cease to be
eligible in accordance with the provisions of this Section,  such Authenticating
Agent shall resign  immediately  in the manner and with the effect  specified in
this Section.

      Any  corporation  into  which an  Authenticating  Agent  may be  merged or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion or consolidation to which such Authenticating Agent
shall be a party,  or any  corporation  succeeding  to the  corporate  agency or
corporate  trust business of an  Authenticating  Agent,  shall continue to be an
Authenticating  Agent,  provided such  corporation  shall be otherwise  eligible
under this Section,  without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

      An  Authenticating  Agent may resign at any time by giving  written notice
thereof to the Trustee and to the Company. The Trustee may at any time terminate
the agency of an  Authenticating  Agent by giving written notice thereof to such
Authenticating  Agent  and to the  Company.  Upon  receiving  such a  notice  of
resignation  or  upon  such  a  termination,   or  in  case  at  any  time  such
Authenticating  Agent  shall  cease  to  be  eligible  in  accordance  with  the
provisions of this Section,  the Trustee may appoint a successor  Authenticating
Agent  which  shall be  acceptable  to the Company and shall give notice of such
appointment in the manner provided in Section 106 to all Holders of Notes of the
series with respect to which such Authenticating Agent will serve. Any successor
Authenticating  Agent upon acceptance of its appointment  hereunder shall become
vested with all the rights, powers and duties of its
                                       48
<PAGE>
predecessor   hereunder,   with  like  effect  as  if  originally  named  as  an
Authenticating  Agent.  No  successor  Authenticating  Agent shall be  appointed
unless eligible under the provisions of this Section.

      The Company agrees to pay to each  Authenticating  Agent from time to time
reasonable compensation for its services under this Section.

      If an  appointment  with respect to one or more series is made pursuant to
this Section, the Notes of such series may have endorsed thereon, in addition to
the Trustee's  certificate  of  authentication,  an  alternative  certificate of
authentication in the following form:

      This is one of the Notes of the series  designated  therein referred to in
the within-mentioned Indenture.


                                                           THE BANK OF NEW YORK,
                                                                      As Trustee



                                                  By............................
                                                         As Authenticating Agent



                                                  By............................
                                                              Authorized Officer
                                       49
<PAGE>
                                  ARTICLE EIGHT

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY


SECTION 801.  Company to Furnish Trustee Names and Addresses of Holders.

      The Company will furnish or cause to be furnished to the Trustee

         (1) fifteen days after each Regular  Record Date, a list,  in such form
   as the Trustee may  reasonably  require,  of the names and  addresses  of the
   Holders of Notes of each series as of such Regular Record Date, and

         (2) at such other times as the  Trustee may request in writing,  within
   30 days after the  receipt  by the  Company  of any such  request,  a list of
   similar form and content as of a date not more than 15 days prior to the time
   such list is furnished;

excluding from any such list names and addresses  received by the Trustee in its
capacity as Note Registrar.


SECTION 802.  Preservation of Information; Communications to Holders.

      The  Trustee  shall  preserve,  in as  current  a  form  as is  reasonably
practicable,  the names and  addresses  of Holders  contained in the most recent
list  furnished  to the  Trustee as  provided  in Section  801 and the names and
addresses of Holders  received by the Trustee in its capacity as Note Registrar.
The Trustee may destroy any list furnished to it as provided in Section 801 upon
receipt of a new list so furnished.

      The rights of Holders to  communicate  with other  Holders with respect to
their rights  under this  Indenture  or under the Notes,  and the  corresponding
rights  and  privileges  of the  Trustee,  shall  be as  provided  by the  Trust
Indenture Act.

      Every Holder of Notes, by receiving and holding the same,  agrees with the
Company and the Trustee  that  neither the Company nor the Trustee nor any agent
of either of them  shall be held  accountable  by  reason of any  disclosure  of
information  as to names and  addresses  of Holders  made  pursuant to the Trust
Indenture Act.


SECTION 803.  Reports by Trustee.

      The Trustee shall transmit to Holders such reports  concerning the Trustee
and its actions  under this  Indenture as may be required  pursuant to the Trust
Indenture  Act at the times and in the  manner  provided  pursuant  thereto.  If
required by Section 313(a) of the Trust Indenture Act, the Trustee shall, within
sixty days after each May 15  following  the date of this  Indenture  deliver to
Holders  a brief  report,  dated  as of such  May 15,  which  complies  with the
provisions of such Section 313(a).
                                       50
<PAGE>
      A copy of each such  report  shall,  at the time of such  transmission  to
Holders,  be filed by the Trustee with each stock  exchange upon which any Notes
are listed, with the Commission and with the Company.  The Company will promptly
notify the Trustee when any Notes are listed on any stock exchange.


SECTION 804.  Reports by Company.

      The Company shall file with the Trustee and the  Commission,  and transmit
to Holders,  such information,  documents and other reports,  and such summaries
thereof, as may be required pursuant to the Trust Indenture Act at the times and
in the manner provided pursuant to such Act; provided that any such information,
documents  or reports  required  to be filed  with the  Commission  pursuant  to
Section 13 or 15(d) of the Exchange  Act shall be filed with the Trustee  within
15 days after the same is so required to be filed with the Commission.


                                  ARTICLE NINE

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE


SECTION 901.  Company May Consolidate, Etc., Only on Certain Terms.

      The Company shall not  consolidate  with or merge into any other Person or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person,  and the Company shall not permit any Person to consolidate  with
or merge into the Company or convey, transfer or lease its properties and assets
substantially as an entirety to the Company, unless:

         (1) in case the Company  shall  consolidate  with or merge into another
   Person or convey,  transfer or lease its properties and assets  substantially
   as an entirety to any Person, the Person formed by such consolidation or into
   which the Company is merged or the Person  which  acquires by  conveyance  or
   transfer,  or  which  leases,  the  properties  and  assets  of  the  Company
   substantially   as  an  entirety   shall  be  a   corporation,   partnership,
   unincorporated organization or trust, shall be organized and validly existing
   under the laws of the  United  States of  America,  any State  thereof or the
   District  of  Columbia  and  (a)  shall  expressly  assume,  by an  indenture
   supplemental  hereto,   executed  and  delivered  to  the  Trustee,  in  form
   satisfactory to the Trustee, the due and punctual payment of the principal of
   and any  premium  and  interest  on all the  Notes  and  the  performance  or
   observance of every  covenant of this Indenture on the part of the Company to
   be  performed  or observed  (b) if such  consolidation,  merger,  conveyance,
   transfer,  or lease occurs prior to the Release Date, shall expressly assume,
   by an indenture supplemental to the First Mortgage, executed and delivered to
   the Trustee and the Mortgage Trustee, in form satisfactory to the Trustee and
   the Mortgage  Trustee,  the due and punctual  payment of the principal of and
   any premium and interest on all of the Senior Note First  Mortgage  Bonds and
   the  performance  of every  covenant of the First Mortgage on the part of the
   Company to be performed or observed.  For purposes of this Article Nine,  the
   phrase "assets  substantially  as an entirety"  shall mean 50% or more of the
   total assets of the 
                                       51
<PAGE>
   Company  as  shown  on  the  consolidated  balance sheet of the Company as of
   the end of the calendar  year  immediately  preceding  the day of the year in
   which such  determination is made and nothing in this Indenture shall prevent
   or hinder the Company  from  conveying,  transferring  or leasing  during any
   calendar year (in one transaction or a series of transactions)  less than 50%
   of the amount of its total assets as shown on the consolidated  balance sheet
   of the Company as of the end of the immediately preceding calendar year;

         (2)  immediately  after giving effect to such  transaction and treating
   any indebtedness which becomes an obligation of the Company or any Subsidiary
   as a result of such  transaction  as having  been  incurred by the Company or
   such Subsidiary at the time of such transaction,  no Event of Default, and no
   event which,  after notice or lapse of time or both, would become an Event of
   Default, shall have happened and be continuing;

         (3) if,  as a  result  of any  such  consolidation  or  merger  or such
   conveyance,  transfer or lease,  properties  or assets of the  Company  would
   become  subject to a  mortgage,  pledge,  lien,  security  interest  or other
   encumbrance  which would not be permitted by this  Indenture,  the Company or
   such successor  Person, as the case may be, shall take such steps as shall be
   necessary  effectively to secure the Notes equally and ratably with (or prior
   to) all indebtedness secured thereby; and

         (4) the Company has  delivered to the Trustee an Officers'  Certificate
   and an Opinion of Counsel,  each  stating  that such  consolidation,  merger,
   conveyance, transfer or lease and, if a supplemental indenture is required in
   connection with such  transaction,  such  supplemental  indenture comply with
   this Article and that all conditions  precedent  herein provided for relating
   to such transaction have been complied with.


SECTION 902.  Successor Substituted.

      Upon any consolidation of the Company with, or merger of the Company into,
any other  Person or any  conveyance,  transfer or lease of the  properties  and
assets of the Company  substantially  as an entirety in accordance  with Section
901, the successor Person formed by such consolidation or into which the Company
is merged or to which such  conveyance,  transfer or lease is made shall succeed
to, and be  substituted  for,  and may  exercise  every  right and power of, the
Company under this Indenture  with the same effect as if such  successor  Person
had been named as the Company herein,  and  thereafter,  except in the case of a
lease, the predecessor Person shall be relieved of all obligations and covenants
under this Indenture and the Notes.
                                       52
<PAGE>
                                   ARTICLE TEN

                             SUPPLEMENTAL INDENTURES


SECTION 1001.  Supplemental Indentures Without Consent of Holders.

      Without the consent of any Holders,  the  Company,  when  authorized  by a
Board Resolution,  and the Trustee, at any time and from time to time, may enter
into one or more indentures  supplemental  hereto,  in form  satisfactory to the
Trustee, for any of the following purposes:

         (1) to evidence the succession of another Person to the Company and the
   assumption by any such  successor of the covenants of the Company  herein and
   in the Notes; or

         (2) to add to the  covenants  of the  Company  for the  benefit  of the
   Holders of all or any series of Notes  (and if such  covenants  are to be for
   the benefit of less than all series of Notes, stating that such covenants are
   expressly  being  included  solely  for the  benefit  of such  series)  or to
   surrender any right or power herein conferred upon the Company; or

         (3) to add any  additional  Events of  Default  for the  benefit of the
   Holders  of all or any  series  of Notes  (and if such  additional  Events of
   Default are to be for the  benefit of less than all series of Notes,  stating
   that such  additional  Events of Default are expressly  being included solely
   for the benefit of such series); or

         (4) to add to or change any of the provisions of this Indenture to such
   extent as shall be necessary to permit or facilitate the issuance of Notes in
   bearer form,  registrable  or not  registrable  as to principal,  and with or
   without interest coupons, or to permit or facilitate the issuance of Notes in
   uncertificated form; or

         (5) to add  to,  change  or  eliminate  any of the  provisions  of this
   Indenture in respect of one or more series of Notes,  provided  that any such
   addition,  change or  elimination  (A) shall neither (i) apply to any Note of
   any series created prior to the execution of such supplemental  indenture and
   entitled to the benefit of such  provision  nor (ii) modify the rights of the
   Holder of any such Note with  respect to such  provision  or (B) shall become
   effective only when there is no such Note Outstanding; or

         (6) to secure the Notes; or

         (7) to establish  the form or terms of Notes of any series as permitted
   by Sections 201 and 301; or

         (8) to evidence and provide for the acceptance of appointment hereunder
   by a successor Trustee with respect to the Notes of one or more series and to
   add to or  change  any of the  provisions  of  this  Indenture  as  shall  be
   necessary  to provide  for or  facilitate  the  administration  of the trusts
   hereunder by more than one Trustee,  pursuant to the  requirements of Section
   711; or
                                       53
<PAGE>
         (9) to cure any  ambiguity,  to correct  or  supplement  any  provision
   herein  which may be  defective  or  inconsistent  with any  other  provision
   herein,  or to make any other provisions with respect to matters or questions
   arising  under this  Indenture,  provided  that such action  pursuant to this
   Clause (9) shall not  adversely  affect the interests of the Holders of Notes
   of any series in any material respect.


SECTION 1002.  Supplemental Indentures With Consent of Holders.

      With the consent of the Holders of a majority in  principal  amount of the
Outstanding Notes of each series affected by such supplemental indenture, by Act
of said  Holders  delivered to the Company and the  Trustee,  the Company,  when
authorized by a Board Resolution, and the Trustee may enter into an indenture or
indentures  supplemental  hereto for the purpose of adding any  provisions to or
changing in any manner or eliminating any of the provisions of this Indenture or
of  modifying  in any manner the rights of the  Holders of Notes of such  series
under this Indenture;  provided,  however,  that no such supplemental  indenture
shall,  without  the  consent of the Holder of each  Outstanding  Note  affected
thereby,

         (1) change the Stated  Maturity of the principal of, or any  instalment
   of  principal  of or interest on, any Note,  or reduce the  principal  amount
   thereof or the rate of  interest  thereon  or any  premium  payable  upon the
   redemption  thereof,  or reduce the amount of the  principal  of an  Original
   Issue  Discount  Note or any other Note which would be due and payable upon a
   declaration of acceleration of the Maturity  thereof pursuant to Section 602,
   or change any Place of Payment where,  or the coin or currency in which,  any
   Note or any premium or interest  thereon is payable,  or impair the  interest
   hereunder of the Trustee in the Senior Note First Mortgage  Bonds,  or impair
   the right to  institute  suit for the  enforcement  of any such payment on or
   after the Stated Maturity thereof (or, in the case of redemption, on or after
   the  Redemption  Date),  or prior to the Release  Date,  impair the  interest
   hereunder of the Trustee in the Senior Note First Mortgage Bonds,  reduce the
   principal  amount of any  series of Senior  Note First  Mortgage  Bonds to an
   amount less than the principal amount of the related series of Notes or alter
   the payment  provisions of such Senior Note First  Mortgage Bonds in a manner
   adverse to the Holders of the Notes, or

         (2) reduce the percentage in principal amount of the Outstanding  Notes
   of any  series,  the  consent  of  whose  Holders  is  required  for any such
   supplemental  indenture,  or the consent of whose Holders is required for any
   waiver (of  compliance  with certain  provisions of this Indenture or certain
   defaults hereunder and their consequences) provided for in this Indenture, or

         (3)  modify  any of the  provisions  of this  Section,  Section  613 or
   Section  1108,  except to increase  any such  percentage  or to provide  that
   certain  other  provisions  of this  Indenture  cannot be  modified or waived
   without the consent of the Holder of each Outstanding Note affected  thereby;
   provided,  however,  that this  clause  shall not be  deemed to  require  the
   consent of any Holder  with  respect  to  changes in the  references  to "the
   Trustee" and  concomitant  changes in this Section and Section  1108,  or the
   deletion of this proviso, in accordance with the requirements of Sections 711
   and 1001(8).
                                       54
<PAGE>
A  supplemental  indenture  which  changes or  eliminates  any covenant or other
provision of this  Indenture  which has expressly  been included  solely for the
benefit of one or more particular  series of Notes, or which modifies the rights
of the Holders of Notes of such series  with  respect to such  covenant or other
provision,  shall be deemed not to affect the rights under this Indenture of the
Holders of Notes of any other series.

      It shall not be  necessary  for any Act of Holders  under this  Section to
approve the particular form of any proposed supplemental indenture, but it shall
be sufficient if such Act shall approve the substance thereof.


SECTION 1003.  Execution of Supplemental Indentures.

      In  executing,   or  accepting  the  additional  trusts  created  by,  any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture,  the Trustee shall be entitled to receive,
and  (subject  to Section  701) shall be fully  protected  in relying  upon,  an
Opinion of Counsel stating that the execution of such supplemental  indenture is
authorized  or  permitted by this  Indenture.  The Trustee may, but shall not be
obligated  to,  enter into any such  supplemental  indenture  which  affects the
Trustee's own rights, duties or immunities under this Indenture or otherwise.


SECTION 1004.  Effect of Supplemental Indentures.

      Upon the execution of any supplemental  indenture under this Article, this
Indenture  shall be  modified in  accordance  therewith,  and such  supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Notes theretofore or thereafter  authenticated and delivered  hereunder shall
be bound thereby.


SECTION 1005.  Conformity with Trust Indenture Act.

      Every  supplemental  indenture  executed  pursuant to this  Article  shall
conform to the requirements of the Trust Indenture Act.


SECTION 1006.  Reference in Notes to Supplemental Indentures.

      Notes of any series authenticated and delivered after the execution of any
supplemental  indenture  pursuant to this  Article may, and shall if required by
the  Trustee,  bear a notation in form  approved by the Trustee as to any matter
provided for in such supplemental  indenture. If the Company shall so determine,
new Notes of any series so modified as to conform, in the opinion of the Trustee
and the Company, to any such supplemental indenture may be prepared and executed
by the Company and  authenticated  and  delivered by the Trustee in exchange for
Outstanding Notes of such series.
                                       55
<PAGE>
                                 ARTICLE ELEVEN

                                    COVENANTS


SECTION 1101.  Payment of Principal, Premium and Interest.

      The Company  covenants  and agrees for the benefit of each series of Notes
that it will  duly and  punctually  pay the  principal  of and any  premium  and
interest on the Notes of that series in  accordance  with the terms of the Notes
and this Indenture.


SECTION 1102.  Maintenance of Office or Agency.

      The Company will maintain in each Place of Payment for any series of Notes
an office or agency where Notes of that series may be  presented or  surrendered
for payment,  where Notes of that series may be surrendered for  registration of
transfer  or  exchange  and where  notices and demands to or upon the Company in
respect  of the Notes of that  series  and this  Indenture  may be  served.  The
Company will give prompt written notice to the Trustee of the location,  and any
change in the  location,  of such  office or agency.  If at any time the Company
shall  fail to  maintain  any such  required  office or agency or shall  fail to
furnish the Trustee with the address thereof,  such  presentations,  surrenders,
notices and demands may be made or served at the  Corporate  Trust Office of the
Trustee, and the Company hereby appoints the Trustee as its agent to receive all
such presentations, surrenders, notices and demands.

      The Company may also from time to time designate one or more other offices
or  agencies  where  the  Notes  of one or  more  series  may  be  presented  or
surrendered  for any or all such purposes and may from time to time rescind such
designations; provided, however, that no such designation or rescission shall in
any manner relieve the Company of its obligation to maintain an office or agency
in each Place of Payment for Notes of any series for such purposes.  The Company
will give  prompt  written  notice to the  Trustee  of any such  designation  or
rescission and of any change in the location of any such other office or agency.


SECTION 1103.  Money for Notes Payments to Be Held in Trust.

      If the Company  shall at any time act as its own Paying Agent with respect
to any series of Notes,  it will, on or before each due date of the principal of
or any  premium or interest on any of the Notes of that  series,  segregate  and
hold in trust for the benefit of the Persons  entitled  thereto a sum sufficient
to pay the  principal  and any premium and  interest so becoming  due until such
sums shall be paid to such Persons or otherwise  disposed of as herein  provided
and will promptly notify the Trustee of its action or failure so to act.

      Whenever the Company  shall have one or more Paying  Agents for any series
of Notes, it will,  prior to each due date of the principal of or any premium or
interest  on any  Notes  of  that  series,  deposit  with a  Paying  Agent a sum
sufficient to pay such amount, such sum
                                       56
<PAGE>
to be held as provided by the Trust Indenture Act, and (unless such Paying Agent
is the Trustee) the Company  will  promptly  notify the Trustee of its action or
failure so to act.

      The  Company  will cause each  Paying  Agent for any series of Notes other
than the Trustee to execute and  deliver to the Trustee an  instrument  in which
such Paying Agent shall agree with the  Trustee,  subject to the  provisions  of
this Section,  that such Paying Agent will (1) comply with the provisions of the
Trust  Indenture  Act  applicable  to it as a Paying  Agent and (2)  during  the
continuance  of any default by the Company (or any other  obligor upon the Notes
of that  series)  in the  making of any  payment in respect of the Notes of that
series,  upon the written  request of the Trustee,  forthwith pay to the Trustee
all sums held in trust by such Paying  Agent for payment in respect of the Notes
of that series.

      The Company may at any time, for the purpose of obtaining the satisfaction
and  discharge of this  Indenture or for any other  purpose,  pay, or by Company
Order  direct any Paying  Agent to pay, to the Trustee all sums held in trust by
the Company or such Paying  Agent,  such sums to be held by the Trustee upon the
same  trusts as those  upon  which  such sums were held by the  Company  or such
Paying Agent;  and,  upon such payment by any Paying Agent to the Trustee,  such
Paying Agent shall be released from all further  liability  with respect to such
money.

      Any money  deposited with the Trustee or any Paying Agent, or then held by
the  Company,  in trust for the  payment of the  principal  of or any premium or
interest on any Note of any series and  remaining  unclaimed for two years after
such principal,  premium or interest has become due and payable shall be paid to
the  Company  on  Company  Request,  or (if then held by the  Company)  shall be
discharged from such trust; and the Holder of such Note shall thereafter,  as an
unsecured  general creditor,  look only to the Company for payment thereof,  and
all  liability  of the Trustee or such Paying  Agent with  respect to such trust
money,  and all  liability of the Company as trustee  thereof,  shall  thereupon
cease;  provided,  however,  that the Trustee or such Paying Agent, before being
required to make any such repayment,  may at the expense of the Company cause to
be published once, in a newspaper published in the English language, customarily
published  on each  Business  Day and of general  circulation  in the Borough of
Manhattan,  The City of New York,  New York,  notice  that  such  money  remains
unclaimed and that, after a date specified therein, which shall not be less than
30 days from the date of such  publication,  any unclaimed balance of such money
then remaining will be repaid to the Company.


SECTION 1104.  Statement by Officers as to Default.

      The Company will deliver to the Trustee,  within 120 days after the end of
each fiscal year of the  Company  ending  after the date  hereof,  an  Officers'
Certificate, stating whether or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the terms,
provisions  and conditions of this  Indenture  (without  regard to any period of
grace or requirement of notice provided  hereunder) and, if the Company shall be
in default,  specifying  all such defaults and the nature and status  thereof of
which they may have knowledge.
                                       57
<PAGE>
SECTION 1105.  Recording, Filing, etc.; Opinions of Counsel.

      The Company will cause this Indenture, any indentures supplemental to this
Indenture,  and any financing or continuation statements to be promptly recorded
and filed and rerecorded and refiled in such a manner and in such places, as may
be required by law in order fully to preserve,  protect and perfect the security
of the Holders and all rights of the Trustee, and shall deliver to the Trustee:

    (a) promptly  after the execution and delivery of this  Indenture and of any
indenture  supplemental  to this  Indenture  but prior to the Release  Date,  an
Opinion of Counsel  either  stating that,  in the opinion of such counsel,  this
Indenture or such  supplemental  indenture  and any  financing  or  continuation
statements have been properly  recorded and filed so as to make effective and to
perfect the  security  interest  of the  Trustee  intended to be created by this
Indenture  for the benefit of the  Holders  from time to time in the Senior Note
First Mortgage Bonds, and reciting the details of such action,  or stating that,
in the opinion of such  counsel,  no such action is necessary to perfect or make
such  security  interest  effective  and  stating  what,  if any,  action of the
foregoing  character may reasonably be expected to become necessary prior to the
next succeeding November 1 to maintain,  perfect and make such security interest
effective; and

           (b) on or before  November 1 of each  year,  beginning  in 1997,  and
prior to the Release  Date,  an Opinion of Counsel  either  stating  that in the
opinion of such counsel  such action has been taken,  since the date of the most
recent  Opinion of Counsel  furnished  pursuant to this  Section  1105(b) or the
first Opinion of Counsel furnished pursuant to Section 1105(a),  with respect to
the  recording,  filing,  rerecording,  or  refiling  of  this  Indenture,  each
supplemental  indenture  and any  financing or  continuation  statements,  as is
necessary to maintain and perfect the security  interest of the Trustee intended
to be created by this Indenture for the benefit of the Holders from time to time
of the Notes in the Senior Note First Mortgage  Bonds,  and reciting the details
of such action, or stating that in the opinion of such counsel no such action is
necessary to maintain and perfect such  security  interest and stating  what, if
any,  action of the  foregoing  character  may  reasonably be expected to become
necessary prior to the next succeeding November 1 to maintain,  perfect and make
such security interest effective.


SECTION 1106.  Existence.

      Subject  to  Article  Nine,  the  Company  will do or cause to be done all
things  necessary to preserve  and keep in full force and effect its  existence,
rights (charter and statutory) and corporate franchises; provided, however, that
the Company shall not be required to preserve any such right or franchise if the
Board of Directors  shall determine that the  preservation  thereof is no longer
desirable  in the  conduct  of the  business  of the  Company  and that the loss
thereof is not disadvantageous in any material respect to the Holders.
                                       58
<PAGE>
SECTION 1107.  Maintenance of Properties.

      Subject to Article  Nine,  the Company will cause all  properties  used or
useful in the conduct of its  business or the business of any  Subsidiary  to be
maintained  and kept in good  condition,  repair and working  order and supplied
with all necessary  equipment  and will cause to be made all necessary  repairs,
renewals,  replacements,  betterments and  improvements  thereof,  all as in the
judgment of the  Company may be  necessary  so that the  business  carried on in
connection therewith may be properly and advantageously  conducted at all times;
provided,  however,  that nothing in this Section shall prevent the Company from
discontinuing  the operation or  maintenance  of any of such  properties if such
discontinuance  is, in the judgment of the Company,  desirable in the conduct of
its business or the business of any  Subsidiary and not  disadvantageous  in any
material respect to the Holders.


SECTION 1108.  Payment of Taxes and Other Claims.

      The  Company  will pay or  discharge  or  cause to be paid or  discharged,
before  the  same  shall  become  delinquent,  (1) all  taxes,  assessments  and
governmental  charges  levied or imposed upon the Company or any  Subsidiary  or
upon the income,  profits or property of the Company or any Subsidiary,  and (2)
all lawful claims for labor,  materials and supplies which, if unpaid,  might by
law become a lien upon the property of the Company or any Subsidiary;  provided,
however,  that the Company shall not be required to pay or discharge or cause to
be paid or discharged  any such tax,  assessment,  charge or claim whose amount,
applicability  or  validity  is being  contested  in good  faith by  appropriate
proceedings.


SECTION 1109.  Waiver of Certain Covenants.

      Except as otherwise  specified as contemplated by Section 301 for Notes of
such series,  the Company may, with respect to the Notes of any series,  omit in
any  particular  instance to comply with any term,  provision or  condition  set
forth in any covenant provided  pursuant to Section 301(20),  1001(2) or 1001(7)
for the benefit of the Holders of such series or in any of Sections 1107 through
1108 if  before  the time for such  compliance  the  Holders  of a  majority  in
principal  amount of the Outstanding  Notes of such series shall, by Act of such
Holders,  either  waive such  compliance  in such  instance or  generally  waive
compliance  with such term,  provision  or  condition,  but no such waiver shall
extend to or affect such term,  provision or  condition  except to the extent so
expressly waived, and, until such waiver shall become effective, the obligations
of the  Company  and the  duties of the  Trustee  in  respect  of any such term,
provision or condition shall remain in full force and effect.


SECTION 1110.  Calculation of Original Issue Discount.

   The Company shall file with the Trustee  promptly at the end of each calendar
year  a  written  notice  specifying  the  amount  of  original  issue  discount
(including daily rates and accrual  periods) accrued on Outstanding  Notes as of
the end of such year.
                                       59
<PAGE>
                                 ARTICLE TWELVE

                               REDEMPTION OF NOTES


SECTION 1201.  Applicability of Article.

      Notes of any series which are  redeemable  before  their  Stated  Maturity
shall be  redeemable  in  accordance  with their terms and (except as  otherwise
specified as contemplated by Section 301 for such Notes) in accordance with this
Article.


SECTION 1202.  Election to Redeem; Notice to Trustee.

      The  election of the Company to redeem any Notes shall be  evidenced  by a
Board  Resolution or in another manner  specified as contemplated by Section 301
for such Notes.  In case of any  redemption at the election of the Company,  the
Company  shall,  at least  60 days  prior to the  Redemption  Date  fixed by the
Company (unless a shorter notice shall be  satisfactory to the Trustee),  notify
the Trustee of such  Redemption  Date, of the principal  amount of Notes of such
series  to be  redeemed  and,  if  applicable,  of the  tenor of the Notes to be
redeemed.  In the case of any redemption of Notes (a) prior to the expiration of
any  restriction  on such  redemption  provided  in the  terms of such  Notes or
elsewhere in this Indenture, or (b) pursuant to an election of the Company which
is subject to a condition  specified  in the terms of such Notes or elsewhere in
this  Indenture,  the  Company  shall  furnish  the  Trustee  with an  Officers'
Certificate evidencing compliance with such restriction or condition.


SECTION 1203.  Selection by Trustee of Notes to Be Redeemed.

      If less than all the Notes of any series are to be  redeemed  (unless  all
the Notes of such series and of a  specified  tenor are to be redeemed or unless
such redemption affects only a single Note), the particular Notes to be redeemed
shall be  selected  not more than 60 days  prior to the  Redemption  Date by the
Trustee,  from the  Outstanding  Notes of such series not previously  called for
redemption,  by such method as the Trustee shall deem fair and  appropriate  and
which may provide for the selection for redemption of a portion of the principal
amount of any Note of such series,  provided that the unredeemed  portion of the
principal amount of any Note shall be in an authorized denomination (which shall
not be less than the minimum  authorized  denomination)  for such Note.  If less
than all the Notes of such  series and of a  specified  tenor are to be redeemed
(unless such redemption  affects only a single Note), the particular Notes to be
redeemed shall be selected not more than 60 days prior to the Redemption Date by
the Trustee,  from the Outstanding  Notes of such series and specified tenor not
previously called for redemption in accordance with the preceding sentence.

      The  Trustee  shall  promptly  notify the  Company in writing of the Notes
selected  for  redemption  as aforesaid  and, in case of any Notes  selected for
partial redemption as aforesaid, the principal amount thereof to be redeemed.
                                       60

<PAGE>
      The  provisions  of the two  preceding  paragraphs  shall not  apply  with
respect to any redemption  affecting only a single Note, whether such Note is to
be redeemed in whole or in part. In the case of any such redemption in part, the
unredeemed portion of the principal amount of the Note shall be in an authorized
denomination (which shall not be less than the minimum authorized  denomination)
for such Note.

      For all purposes of this Indenture, unless the context otherwise requires,
all provisions  relating to the redemption of Notes shall relate, in the case of
any  Notes  redeemed  or to be  redeemed  only in part,  to the  portion  of the
principal amount of such Notes which has been or is to be redeemed.


SECTION 1204.  Notice of Redemption.

      Notice of redemption shall be given by first-class mail,  postage prepaid,
mailed not less than 30 nor more than 60 days prior to the  Redemption  Date, to
each  Holder  of Notes to be  redeemed,  at his  address  appearing  in the Note
Register.

      All  notices  of  redemption  shall  identify  the  Notes  to be  redeemed
(including CUSIP number) and shall state:

      (1) the Redemption Date,

      (2) the Redemption Price,

      (3) if  less  than  all  the  Outstanding  Notes  of any  series  and of a
   specified tenor consisting of more than a single Note are to be redeemed, the
   identification (and, in the case of partial redemption of any such Notes, the
   principal  amounts) of the particular  Notes to be redeemed and, if less than
   all the Outstanding  Notes of any series and of a specified tenor  consisting
   of a single Note are to be redeemed,  the principal  amount of the particular
   Note to be redeemed,

      (4) that on the Redemption  Date the Redemption  Price will become due and
   payable upon each such Note to be redeemed and, if applicable,  that interest
   thereon will cease to accrue on and after said date,

      (5) the place or places  where  each  such Note is to be  surrendered  for
   payment of the Redemption Price, and

      (6) that the redemption is for a sinking fund, if such is the case.

      Notice  of  redemption  of Notes to be  redeemed  at the  election  of the
   Company  shall be given by the Company or, at the Company's  request,  by the
   Trustee  in  the  name  and at  the  expense  of the  Company  and  shall  be
   irrevocable.
                                       61
<PAGE>
SECTION 1205.  Deposit of Redemption Price.

      Prior to any  Redemption  Date, the Company shall deposit with the Trustee
or with a Paying  Agent (or, if the  Company is acting as its own Paying  Agent,
segregate  and hold in trust as  provided  in  Section  1103) an amount of money
sufficient to pay the Redemption  Price of, and (except if the  Redemption  Date
shall be an Interest  Payment Date) accrued interest on, all the Notes which are
to be redeemed on that date.


SECTION 1206.  Notes Payable on Redemption Date.

      Notice of redemption  having been given as  aforesaid,  the Notes so to be
redeemed shall, on the Redemption Date, become due and payable at the Redemption
Price therein specified,  and from and after such date (unless the Company shall
default in the payment of the Redemption Price and accrued  interest) such Notes
shall cease to bear interest.  Upon surrender of any such Note for redemption in
accordance  with said  notice,  such Note  shall be paid by the  Company  at the
Redemption  Price,  together  with  accrued  interest  to the  Redemption  Date;
provided,  however,  that, unless otherwise specified as contemplated by Section
301,  installments  of  interest  whose  Stated  Maturity  is on or prior to the
Redemption  Date will be payable to the  Holders of such  Notes,  or one or more
Predecessor  Notes,  registered as such at the close of business on the relevant
Record Dates according to their terms and the provisions of Section 307.

      If any Note  called  for  redemption  shall not be so paid upon  surrender
thereof for  redemption,  the principal and any premium shall,  until paid, bear
interest from the Redemption Date at the rate prescribed therefor in the Note.


SECTION 1207.  Notes Redeemed in Part.

      Any Note which is to be redeemed  only in part shall be  surrendered  at a
Place of Payment therefor (with, if the Company or the Trustee so requires,  due
endorsement by, or a written  instrument of transfer in form satisfactory to the
Company and the Trustee  duly  executed  by, the Holder  thereof or his attorney
duly  authorized  in writing),  and the Company shall  execute,  and the Trustee
shall  authenticate  and  deliver  to the  Holder of such Note  without  service
charge,  a new  Note or  Notes  of the same  series  and of like  tenor,  of any
authorized  denomination  as requested by such  Holder,  in aggregate  principal
amount equal to and in exchange for the  unredeemed  portion of the principal of
the Note so surrendered.
                                       62
<PAGE>
                                ARTICLE THIRTEEN

                                  SINKING FUNDS


SECTION 1301.  Applicability of Article.

      The provisions of this Article shall be applicable to any sinking fund for
the  retirement  of  Notes  of any  series  except  as  otherwise  specified  as
contemplated by Section 301 for such Notes.

      The minimum  amount of any sinking fund payment  provided for by the terms
of any Notes is herein  referred to as a "mandatory  sinking fund payment",  and
any payment in excess of such minimum  amount  provided for by the terms of such
Notes is herein referred to as an "optional  sinking fund payment".  If provided
for by the terms of any Notes,  the cash amount of any sinking  fund payment may
be subject to reduction as provided in Section  1302.  Each sinking fund payment
shall be applied to the redemption of Notes as provided for by the terms of such
Notes.


SECTION 1302.  Satisfaction of Sinking Fund Payments with Notes.

      The Company (1) may deliver  Outstanding Notes of a series (other than any
previously  called  for  redemption)  and (2) may  apply as a credit  Notes of a
series which have been redeemed  either at the election of the Company  pursuant
to the terms of such Notes or through  the  application  of  permitted  optional
sinking  fund  payments  pursuant  to the terms of such  Notes,  in each case in
satisfaction  of all or any part of any sinking fund payment with respect to any
Notes of such series  required to be made pursuant to the terms of such Notes as
and to the extent  provided  for by the terms of such Notes;  provided  that the
Notes to be so credited have not been previously so credited. The Notes to be so
credited  shall be received  and credited for such purpose by the Trustee at the
Redemption  Price,  as specified in the Notes so to be redeemed,  for redemption
through  operation  of the  sinking  fund and the  amount of such  sinking  fund
payment shall be reduced accordingly.


SECTION 1303.  Redemption of Notes for Sinking Fund.

      Not less than 60 days  prior to each  sinking  fund  payment  date for any
Notes,  the  Company  will  deliver  to the  Trustee  an  Officers'  Certificate
specifying  the amount of the next  ensuing  sinking fund payment for such Notes
pursuant to the terms of such Notes, the portion thereof, if any, which is to be
satisfied  by payment of cash and the portion  thereof,  if any,  which is to be
satisfied by delivering and crediting Notes pursuant to Section 1302 and stating
the basis  for such  credit  and that such  Notes  have not been  previously  so
credited and will also deliver to the Trustee any Notes to be so delivered.  Not
less than 30 days prior to each such  sinking  fund  payment  date,  the Trustee
shall select the Notes to be redeemed upon such sinking fund payment date in the
manner  specified in Section 1203 and cause notice of the redemption  thereof to
be given in the name of and at the expense of the Company in the manner provided
in Section 1204. Such notice having been duly given, the
                                       63
<PAGE>
redemption  of such Notes shall be made upon the terms and in the manner  stated
in Sections 1206 and 1207.


                                ARTICLE FOURTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE


SECTION 1401.  Company's Option to Effect Defeasance or Covenant Defeasance.

      The Company may elect,  at its option at any time, to have Section 1402 or
Section  1403  applied to any Notes or any series of Notes,  as the case may be,
designated  pursuant to Section 301 as being defeasible pursuant to such Section
1402 or 1403, in accordance with any applicable  requirements  provided pursuant
to Section 301 and upon  compliance  with the conditions set forth below in this
Article.  Any such  election  shall be  evidenced  by a Board  Resolution  or in
another manner specified as contemplated by Section 301 for such Notes.


SECTION 1402.  Defeasance and Discharge.

      Upon the  Company's  exercise of its option (if any) to have this  Section
applied  to any Notes or any series of Notes,  as the case may be,  the  Company
shall be deemed to have been  discharged  from its  obligations  with respect to
such Notes as provided in this Section on and after the date the  conditions set
forth in Section 1404 are satisfied  (hereinafter  called  "Defeasance") and the
obligation  of the Company to make payment with respect to the  principal of and
premium,  if may, and interest on the Senior Notes First Mortgage Bonds shall be
satisfied and  discharged,  as provided in the  supplemental  trust indenture or
indentures to the First Mortgage  creating such Senior Note First Mortgage Bonds
and the Senior Note First  Mortgage Bonds shall cease to secure the Notes in any
manner. For this purpose, such Defeasance means that the Company shall be deemed
to have paid and  discharged the entire  indebtedness  represented by such Notes
and to have  satisfied  all its  other  obligations  under  such  Notes and this
Indenture  insofar as such Notes are concerned (and the Trustee,  at the expense
of the  Company,  shall  execute  proper  instruments  acknowledging  the same),
subject to the  following  which shall  survive  until  otherwise  terminated or
discharged hereunder: (1) the rights of Holders of such Notes to receive, solely
from the trust fund  described  in  Section  1404 and as more fully set forth in
such  Section,  payments  in respect of the  principal  of and any  premium  and
interest on such Notes when payments are due, (2) the Company's obligations with
respect to such Notes  under  Sections  304,  305,  306,  1102 and 1103 and with
respect to the Trustee under Section 707, (3) the rights, powers, trusts, duties
and  immunities  of the  Trustee  hereunder  and (4) this  Article.  Subject  to
compliance  with this  Article,  the Company may exercise its option (if any) to
have this Section applied to any Notes notwithstanding the prior exercise of its
option (if any) to have Section 1403 applied to such Notes. 
                                       64
<PAGE>
SECTION 1403.  Covenant Defeasance.

      Upon the  Company's  exercise of its option (if any) to have this  Section
applied to any Notes or any series of Notes, as the case may be, (1) the Company
shall be released  from its  obligations  under  Section  901(3),  Sections 1107
through 1108, inclusive, and any covenants provided pursuant to Section 301(20),
1001(2),  1001(6) or 1001(7)  and 601(8) for the  benefit of the Holders of such
Notes and (2) the  occurrence  of any event  specified in Sections  601(4) (with
respect to any of Section 901(3), Sections 1107 through 1108, inclusive, and any
such  covenants  provided  pursuant  to  Section  301(20),  1001(2),  1001(6) or
1001(7))  and 601(8)  shall be deemed not to be or result in an Event of Default
with respect to such Notes as provided in this Section on and after the date the
conditions set forth in Section 1404 are satisfied (hereinafter called "Covenant
Defeasance").  For this  purpose,  such  Covenant  Defeasance  means that,  with
respect to such  Notes,  the  Company  may omit to comply with and shall have no
liability in respect of any term,  condition or limitation set forth in any such
specified  Section (to the extent so specified  in the case of Section  601(4)),
whether  directly or indirectly by reason of any reference  elsewhere  herein to
any such Section or by reason of any  reference in any such Section to any other
provision  herein or in any other document,  but the remainder of this Indenture
and such Notes shall be unaffected thereby.


SECTION 1404.  Conditions to Defeasance or Covenant Defeasance.

      The following  shall be the conditions to the  application of Section 1402
or Section 1403 to any Notes or any series of Notes, as the case may be:

         (1) The  Company  shall  irrevocably  have  deposited  or  caused to be
   deposited  with the Trustee as trust funds in trust for the purpose of making
   the following payments,  specifically  pledged as security for, and dedicated
   solely to, the benefit of the Holders of such Notes,  (A) money in an amount,
   or (B) U.S.  Government  Obligations  which through the scheduled  payment of
   principal and interest in respect thereof in accordance with their terms will
   provide, not later than one day before the due date of any payment,  money in
   an amount,  or (C) a combination  thereof,  in each case  sufficient,  in the
   opinion of a nationally  recognized  firm of independent  public  accountants
   expressed in a written certification thereof delivered to the Trustee, to pay
   and  discharge,  and  which  shall  be  applied  by the  Trustee  to pay  and
   discharge, the principal of and any premium and interest on such Notes on the
   respective Stated  Maturities or on any Redemption Date established  pursuant
   to clause (9) below,  in accordance with the terms of this Indenture and such
   Notes. As used herein,  "U.S.  Government  Obligation" means (x) any security
   which is (i) a direct  obligation  of the United  States of  America  for the
   payment of which the full faith and credit of the United States of America is
   pledged or (ii) an  obligation  of a Person  controlled  or supervised by and
   acting as an agency or  instrumentality  of the United  States of America the
   payment  of which is  unconditionally  guaranteed  as a full faith and credit
   obligation  by the United  States of  America,  which,  in either case (i) or
   (ii), is not callable or redeemable at the option of the issuer thereof,  and
   (y) any depositary receipt issued by a bank (as defined in Section 3(a)(2) of
   the Notes Act) as custodian  with respect to any U.S.  Government  Obligation
   which is  specified in Clause (x) above and held by such bank for the account
   of the holder of such  depositary  receipt,  or with  respect to any specific
   payment of principal of or interest on any U.S.
                                       65
<PAGE>
   Government   Obligation   which  is  so  specified   and held,  provided that
   (except as  required by law) such  custodian  is not  authorized  to make any
   deduction  from the amount payable to the holder of such  depositary  receipt
   from any amount  received by the custodian in respect of the U.S.  Government
   Obligation or the specific payment of principal or interest evidenced by such
   depositary receipt.

         (2) In the event of an election to have Section 1402 apply to any Notes
   or any series of Notes,  as the case may be, the Company shall have delivered
   to the  Trustee  an  Opinion  of Counsel  stating  that (A) the  Company  has
   received from, or there has been published by, the Internal Revenue Service a
   ruling or (B) since the date of this  instrument,  there has been a change in
   the  applicable  Federal  income  tax law,  in either  case (A) or (B) to the
   effect that,  and based thereon such opinion shall confirm that,  the Holders
   of such Notes will not recognize gain or loss for Federal income tax purposes
   as a result of the deposit,  Defeasance  and  discharge  to be effected  with
   respect to such  Notes and will be subject to Federal  income tax on the same
   amount, in the same manner and at the same times as would be the case if such
   deposit, Defeasance and discharge were not to occur.

         (3) In the event of an election to have Section 1403 apply to any Notes
   or any series of Notes,  as the case may be, the Company shall have delivered
   to the  Trustee an Opinion of Counsel to the effect  that the Holders of such
   Notes will not  recognize  gain or loss for Federal  income tax purposes as a
   result of the deposit and Covenant  Defeasance to be effected with respect to
   such Notes and will be subject to Federal  income tax on the same amount,  in
   the same  manner and at the same  times as would be the case if such  deposit
   and Covenant Defeasance were not to occur.

         (4) The  Company  shall have  delivered  to the  Trustee  an  Officers'
   Certificate  to the effect that neither such Notes nor any other Notes of the
   same series, if then listed on any securities exchange, will be delisted as a
   result of such deposit.

         (5) No event  which is, or after  notice or lapse of time or both would
   become,  an Event of Default  with  respect to such Notes or any other  Notes
   shall have  occurred and be  continuing  at the time of such deposit or, with
   regard to any such event specified in Sections 601(6) and (7), at any time on
   or prior to the 90th day after the date of such deposit (it being  understood
   that this condition shall not be deemed satisfied until after such 90th day).

         (6) Such Defeasance or Covenant  Defeasance shall not cause the Trustee
   to have a conflicting  interest within the meaning of the Trust Indenture Act
   (assuming all Notes are in default within the meaning of such Act).

         (7) Such Defeasance or Covenant Defeasance shall not result in a breach
   or  violation  of, or  constitute  a default  under,  any other  agreement or
   instrument to which the Company is a party or by which it is bound.

         (8) Such  Defeasance  or  Covenant  Defeasance  shall not result in the
   trust arising from such deposit constituting an investment company within the
   meaning of the  Investment  Company Act unless such trust shall be registered
   under such Act or exempt from registration thereunder.
                                       66
<PAGE>
         (9) If the Notes are to be  redeemed  prior to Stated  Maturity  (other
   than from mandatory sinking fund payments or analogous  payments),  notice of
   such  redemption  shall have been duly given  pursuant to this  Indenture  or
   provision therefor satisfactory to the Trustee shall have been made.

         (10) The  Company  shall have  delivered  to the  Trustee an  Officers'
   Certificate  and an Opinion of  Counsel,  each  stating  that all  conditions
   precedent with respect to such  Defeasance or Covenant  Defeasance  have been
   complied with.


SECTION 1405.  Deposited Money and U.S. Government Obligations to Be
   Held in Trust; Miscellaneous Provisions.

      Subject to the provisions of the last paragraph of Section 1103, all money
and U.S. Government  Obligations (including the proceeds thereof) deposited with
the Trustee  pursuant  to Section  1404 in respect of any Notes shall be held in
trust and applied by the Trustee,  in  accordance  with the  provisions  of such
Notes and this  Indenture,  to the payment,  either directly or through any such
Paying  Agent  (including  the  Company  acting as its own Paying  Agent) as the
Trustee may  determine,  to the  Holders of such  Notes,  of all sums due and to
become due thereon in respect of  principal  and any premium and  interest,  but
money so held in trust need not be  segregated  from other  funds  except to the
extent required by law.

      The Company shall pay and  indemnify  the Trustee  against any tax, fee or
other  charge  imposed on or assessed  against the U.S.  Government  Obligations
deposited  pursuant to Section 1404 or the  principal  and interest  received in
respect thereof other than any such tax, fee or other charge which by law is for
the account of the Holders of Outstanding Notes.

      Anything  in this  Article to the  contrary  notwithstanding,  the Trustee
shall  deliver or pay to the Company from time to time upon Company  Request any
money or U.S. Government Obligations held by it as provided in Section 1404 with
respect to any Notes which,  in the opinion of a nationally  recognized  firm of
independent  public  accountants  expressed in a written  certification  thereof
delivered to the Trustee,  are in excess of the amount  thereof which would then
be required to be deposited to effect the Defeasance or Covenant Defeasance,  as
the case may be, with respect to such Notes.


SECTION 1406.  Reinstatement.

      If the  Trustee  or the  Paying  Agent is  unable  to apply  any  money in
accordance with this Article with respect to any Notes by reason of any order or
judgment  of any  court or  governmental  authority  enjoining,  restraining  or
otherwise  prohibiting  such  application,   then  the  obligations  under  this
Indenture and such Notes from which the Company has been  discharged or released
pursuant to Section  1402 or 1403 shall be revived and  reinstated  as though no
deposit had occurred pursuant to this Article with respect to such Notes,  until
such time as the Trustee or Paying Agent is permitted to apply all money held in
trust  pursuant to Section  1405 with respect to such Notes in  accordance  with
this  Article;  provided,  however,  that if the  Company  makes any  payment of
principal  of or any  premium  or  interest  on any  such  Note  following  such
reinstatement of its obligations, the Company
                                       67
<PAGE>
shall be  subrogated  to the  rights  (if any) of the  Holders  of such Notes to
receive such payment from the money so held in trust.



                          -----------------------------


      This  instrument  may be executed in any number of  counterparts,  each of
which so executed shall be deemed to be an original,  but all such  counterparts
shall together constitute but one and the same instrument.

      IN WITNESS  WHEREOF,  the parties  hereto have caused this Indenture to be
duly executed,  and their respective  corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.



                                                  ARIZONA PUBLIC SERVICE COMPANY


                                           By         Nancy E. Newquist
                                             ...................................
                                                         Treasurer

Attest:

Betsy A. Pregulman
 ............................
Associate Secretary


                                           THE BANK OF NEW YORK, as Trustee


                                           By           Walter N. Gitlin
                                             ...................................
                                                         Vice President

Attest:

Robert E. Patterson
 ............................
Assistant Vice President
                                       68
<PAGE>
STATE OF ARIZONA           )
                           )  ss.:
COUNTY OF MARICOPA         )


      On the 21st day of November  before me personally  came Nancy E. Newquist,
to me  known,  who,  being  by me duly  sworn,  did  depose  and say that she is
Treasurer of Arizona Public Service Company,  one of the corporations  described
in and which executed the foregoing instrument;  that she knows the seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that she signed her name thereto by like authority.


                                             Maria R. Marrs
                                           .....................................

                                           My Commission Expires July 21, 1998
                                                                ................

STATE OF NEW YORK          )
                           )  ss.:
COUNTY OF NEW YORK         )


      On the 20th day of November,  before me personally  came Walter N. Gitlin,
to me known,  who,  being by me duly  sworn,  did depose and say that he is Vice
President  of The Bank of New York,  one of the  corporations  described  in and
which  executed  the  foregoing  instrument;  that  he  knows  the  seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that he signed his name thereto by like authority.


                                             William J. Cassels
                                           .....................................

                                           My Commission Expires  May 16, 1998
                                                                ................
                                             
                                       69

                   ------------------------------------------
                                  Exhibit 4.6

                         ARIZONA PUBLIC SERVICE COMPANY

                                       TO

                              THE BANK OF NEW YORK

                                     Trustee

                          ----------------------------

                          First Supplemental Indenture

                          Dated as of November 15, 1996

                                       To

                                    Indenture

                          Dated as of November 15, 1996

                          ----------------------------

                          6 3/4% Senior Notes Due 2006

                   ------------------------------------------
<PAGE>
         FIRST  SUPPLEMENTAL  INDENTURE,  dated as of November 15, 1996, between
Arizona Public Service Company,  a corporation duly organized and existing under
the laws of the State of  Arizona  (herein  called  the  "Company"),  having its
principal office at 400 North Fifth Street, Phoenix, Arizona 85004, and The Bank
of New York,  a New York  banking  corporation,  as Trustee  (herein  called the
"Trustee") under the Indenture dated as of November 15, 1996 between the Company
and the Trustee (the "Indenture")

                             RECITALS OF THE COMPANY

         The Company has executed and  delivered the Indenture to the Trustee to
provide for the issuance  from time to time of its Senior  Notes (the  "Notes"),
said Notes to be issued in one or more series as in the Indenture provided.

         Pursuant to the terms of the Indenture,  the Company desires to provide
for the  establishment  of a new  series  of its Notes to be known as its 6 3/4%
Senior Notes Due 2006 (herein called the "Senior Notes Due 2006"),  the form and
substance  of such  Senior  Notes  Due  2006  and  the  terms,  provisions,  and
conditions  thereof to be set forth as provided in the  Indenture and this First
Supplemental Indenture.

         All things necessary to make this First Supplemental  Indenture a valid
agreement of the Company,  and to make the Senior Notes Due 2006,  when executed
by the  Company  and  authenticated  and  delivered  by the  Trustee,  the valid
obligations of the Company, have been done.

          NOW, THEREFORE, THIS FIRST SUPPLEMENTAL INDENTURE WITNESSETH:

         For and in consideration of the premises and the purchase of the Senior
Notes Due 2006 by the Holders thereof,  and for the purpose of setting forth, as
provided in the  Indenture,  the form and substance of the Senior Notes Due 2006
and the terms,  provisions,  and conditions  thereof, it is mutually agreed, for
the equal and proportionate benefit of all Holders of the Senior Notes Due 2006,
as follows:

                                   ARTICLE ONE

                         GENERAL TERMS AND CONDITIONS OF
                            THE SENIOR NOTES DUE 2006

         SECTION 101. There shall be and is hereby  authorized a series of Notes
designated  the "6 3/4% Senior Notes Due 2006,"  limited in aggregate  principal
amount to $100,000,000,  which amount shall be as set forth in any Company Order
for the  authentication  and delivery of Senior Notes Due 2006. The Senior Notes
Due 2006 shall mature and the principal  shall be due and payable  together with
all  accrued and unpaid  interest  thereon on November  15,  2006,  and shall be
issued in the form of registered Senior Notes Due 2006 without coupons.

         SECTION 102. The Senior Notes Due 2006 shall be issued in  certificated
form,  except  that the  Senior  Notes Due 2006 shall be issued  initially  as a
Global  Note to and  registered  in the name of Cede  &Co.,  as  nominee  of The
Depository Trust Company, as Depositary
<PAGE>
therefor.  Any Senior  Notes Due 2006 to be issued or  transferred  to, or to be
held by, Cede & Co. (or any  successor  thereof) for such purpose shall bear the
depositary  legend in substantially the form set forth at the top of the form of
Senior Note Due 2006 in Article III hereof (in lieu of that set forth in Section
204 of the Indenture), unless otherwise agreed by the Company, such agreement to
be  confirmed  in writing to the  Trustee.  Such Global Note may be exchanged in
whole or in part for Senior Notes Due 2006 registered,  and any transfer of such
Global  Note in  whole  or in part  may be  registered,  in the name or names of
Persons  other  than  such  Depositary  or a  nominee  thereof  only  under  the
circumstances  set forth in Clause (2) of the last  paragraph  of Section 305 of
the Indenture,  or such other  circumstances  in addition to or in lieu of those
set forth in Clause (2) of the last paragraph of Section 305 of the Indenture as
to which the Company shall agree,  such  agreement to be confirmed in writing to
the Trustee. Principal of, and premium, if any, and interest on the Senior Notes
Due 2006  will be  payable,  the  transfer  of  Senior  Notes  Due 2006  will be
registrable and Senior Notes Due 2006 will be exchangeable  for Senior Notes Due
2006  bearing  identical  terms and  provisions,  at the office or agency of the
Company in the Borough of Manhattan,  The City and State of New York;  provided,
however,  that  payment of interest  may be made at the option of the Company by
check  mailed to the  registered  holder at such  address as shall appear in the
Security Register.

         SECTION 103.  Each Senior Note Due 2006 will bear  interest at the rate
of 6 3/4% per annum from November 15, 1996 until the principal  thereof  becomes
due and payable, and on any overdue principal and (to the extent that payment of
such interest is enforceable under applicable law) on any overdue installment of
interest at the same rate per annum,  payable on May 15 and  November 15 of each
year (each,  an "Interest  Payment  Date"),  commencing  on May 15, 1997, to the
person in whose name such  Senior Note Due 2006 or any  predecessor  Senior Note
Due 2006 is  registered,  at the close of  business  on the May 1 or November 15
next preceding such Interest Payment Date; provided,  however, that the interest
payable at  maturity  will be payable to the person to whom  principal  shall be
payable.  Any such interest installment not punctually paid or duly provided for
shall  forthwith  cease to be payable to the registered  holders on such regular
record  date,  and may be paid to the person in whose  name the Senior  Note Due
2006 (or one or more  Predecessor  Notes) is registered at the close of business
on a special  record  date to be fixed by the  Trustee  for the  payment of such
defaulted  interest,  notice whereof shall be given to the registered holders of
the  Senior  Notes Due 2006 not less than 10 days prior to such  special  record
date,  or may be paid at any time in any other  lawful  manner not  inconsistent
with the  requirements of any securities  exchange on which the Senior Notes Due
2006 may be listed,  and upon such notice as may be  required by such  exchange,
all as more fully provided in the Indenture.

         The amount of  interest  payable for any period will be computed on the
basis of a 360- day year of twelve  30-day  months.  Interest  will  accrue from
November 15, 1996 to, but not including, the relevant payment date. In the event
that any date on which interest is payable on the Senior Notes Due 2006 is not a
Business Day, then payment of interest  payable on such date will be made on the
next  succeeding  day which is a Business Day (and without any interest or other
payment in respect of any such delay), except that, if such Business Day is
                                        2
<PAGE>
in the  next  succeeding  calendar  year,  such  payment  shall  be  made on the
immediately  preceding Business Day, in each case with the same force and effect
as if made on such date. A "Business Day" shall mean any day other than a day on
which banking  institutions  in The City of New York are authorized or obligated
by law to close.

         SECTION 104. The Company,  at its option, may redeem all, or, from time
to time,  any part of the Senior Notes Due 2006,  upon notice as provided in the
Indenture at a redemption  price equal to the sum of (a) the principal amount of
the Senior  Notes Due 2006 (or portion  thereof)  being  redeemed  plus  accrued
interest  thereon to the redemption date and (b) the Make-Whole  Amount (if any)
with respect to the Senior Notes Due 2006 being redeemed.

         For purposes of this Section  104, the  following  terms shall have the
following meanings:

         "Make-Whole Amount" means in connection with any optional redemption of
any Senior  Notes Due 2006,  the excess,  if any, of (i) the  aggregate  present
value  as of the date of such  redemption  of each  dollar  or  principal  being
redeemed and the amount of interest  (exclusive of interest  accrued to the date
of  redemption)  that would have been  payable in respect of each such dollar if
such redemption had not been made  determined by  discounting,  on a semi-annual
basis,  such principal and interest at the Reinvestment  Rate (determined on the
third  Business Day  preceding the date such notice of redemption is given) from
the  respective  dates on which  such  principal  and  interest  would have been
payable, if such redemption had not been made, over (ii) the aggregate principal
amount of the Senior Notes Due 2006 being redeemed.

         "Reinvestment  Rate" means 0.10% plus the arithmetic mean of the yields
under  the  respective  heading  "Week  Ending"  published  in the  most  recent
Statistical  Release under the caption  "Treasury  Constant  Maturities" for the
maturity  (rounded to the nearest month)  corresponding to the remaining life to
maturity,  as of the payment date of the principal being redeemed or paid. If no
maturity  exactly  corresponds  to such  maturity,  yields for the two published
maturities  most closely  corresponding  to such  maturity  shall be  calculated
pursuant to the immediately  preceding  sentence and the Reinvestment Rate shall
be  interpolated  or  extrapolated  from such  yields on a  straight-line  basis
rounding in each of such relevant  periods to the nearest month. For the purpose
of  calculating  the  Reinvestment  Rate,  the most recent  Statistical  Release
published prior to the date of determination  of the Make-Whole  Amount shall be
used.

         "Statistical   Release"   means  the   statistical   release   designed
"H.15(519)"  or any  successor  publication  which is  published  weekly  by the
Federal  Reserve System and which  establishes  yields on actively traded United
Stated  government  securities  adjusted  to  constant  maturities,  or, if such
statistical  release is not published at the time of any determination under the
Indenture, then such other reasonably comparable index which shall be designated
by the Company.
                                        3
<PAGE>
         The Trustee  shall be under no duty to inquire into,  may  conclusively
presume  the  correctness  of, and shall be fully  protected  in acting upon the
Company's  calculation of any redemption price,  including any Make-Whole Amount
(if any).

         SECTION 105. The related series of Senior Note First Mortgage Bonds for
the Senior Notes Due 2006 is the Company's  First Mortgage  Bonds,  Senior Notes
Series A (the "Senior Note Series A Bonds").

         SECTION 106.  When the  obligation of the Company to make payments with
respect to the  principal  of, and  premium,  if any, and interest on all or any
part of the Senior Note Series A Bonds shall be  satisfied  or deemed  satisfied
pursuant to Section 403, Section 501, or Article 14 of the Indenture or pursuant
to Section 104 of this First  Supplemental  Indenture,  the Trustee shall,  upon
written  request of the Company and the receipt of the certificate of the Expert
described  in  Section  404(b) of the  Indenture  (if such  certificate  is then
required by Section  404(b) of the  Indenture),  deliver to the Company  without
charge  therefor  all of the Senior Note Series A Bonds so  satisfied  or deemed
satisfied,  together with such appropriate instruments of transfer or release as
may be  reasonably  requested  by the  Company.  All Senior  Note Series A Bonds
delivered to the Company in accordance  with this Section 106 shall be delivered
by the Company to the First Mortgage Trustee for cancellation.

         SECTION 107. The Senior Notes Due 2006 shall be defeasable  pursuant to
Section 1402 and Section 1403 of the Indenture.

                                   ARTICLE TWO

                              ADDITIONAL COVENANTS

         SECTION  201.  (a) From and after the  Release  Date and so long as any
Senior Notes Due 2006 are Outstanding,  the Company will not issue,  assume,  or
guarantee any Debt secured by any mortgage,  security interest,  pledge, or lien
(herein  referred to as a "mortgage")  of or upon any Operating  Property of the
Company,  whether owned at the date of the Indenture or thereafter acquired, and
will not  permit  to exist  any Debt  secured  by a  mortgage  on any  Operating
Property  created  on or prior to the  Release  Date,  without  in any such case
effectively  securing,  on the later to occur of the  issuance,  assumption,  or
guarantee of any such Debt or the Release Date, the Outstanding Senior Notes Due
2006 (together  with, if the Company shall so determine,  any other Note or Debt
of or guaranteed by the Company  ranking  senior to, or equally with, the Notes)
equally  and  ratably  with such Debt;  provided,  however,  that the  foregoing
restriction shall not apply to Debt secured by any of the following:

                           (1)      mortgages  on any  property  existing at the
                                    time of acquisition thereof;
                                        4
<PAGE>
                           (2)      mortgages  on  property  of  a   corporation
                                    existing  at the time  such  corporation  is
                                    merged   into  or   consolidated   with  the
                                    Company, or at the time of a sale, lease, or
                                    other  disposition of the properties of such
                                    corporation  or a  division  thereof  as  an
                                    entirety or  substantially as an entirety to
                                    the Company,  provided that such mortgage as
                                    a  result  of  such  merger,  consolidation,
                                    sale,  lease,  or other  disposition  is not
                                    extended  to  property  owned by the Company
                                    immediately prior thereto;

                           (3)      mortgages  on property to secure all or part
                                    of  the  cost  of  acquiring,  constructing,
                                    developing,   or  substantially   repairing,
                                    altering,  or improving such property, or to
                                    secure  indebtedness   incurred  to  provide
                                    funds   for   any   such   purpose   or  for
                                    reimbursement of funds  previously  expended
                                    for  any   such   purpose,   provided   such
                                    mortgages    are    created    or    assumed
                                    contemporaneously  with, or within  eighteen
                                    (18)  months  after,   such  acquisition  or
                                    completion of construction,  development, or
                                    substantial    repair,     alteration,    or
                                    improvement   or  within   six  (6)   months
                                    thereafter  pursuant  to  a  commitment  for
                                    financing arranged with a lender or investor
                                    within such eighteen (18) month period;

                           (4)      mortgages  in favor of the United  States of
                                    America  or  any  State   thereof,   or  any
                                    department,  agency, or  instrumentality  or
                                    political  subdivision  of the United States
                                    of America or any State thereof,  or for the
                                    benefit of holders of  securities  issued by
                                    any such entity, to secure any Debt incurred
                                    for the purpose of financing all or any part
                                    of  the  purchase   price  or  the  cost  of
                                    constructing,  developing,  or substantially
                                    repairing,   altering,   or  improving   the
                                    property subject to such mortgages; or

                           (5)      any extension,  renewal or  replacement  (or
                                    successive    extensions,    renewals,    or
                                    replacements),  in whole or in part,  of any
                                    mortgage   referred  to  in  the   foregoing
                                    clauses  (1) to  (4),  inclusive;  provided,
                                    however,  that the principal  amount of Debt
                                    secured thereby and not otherwise authorized
                                    by said clauses (1) to (4), inclusive, shall
                                    not  exceed  the  principal  amount of Debt,
                                    plus  any   premium   or  fee   payable   in
                                    connection with any such extension, renewal,
                                    or  replacement,  so  secured at the time of
                                    such extension, renewal, or replacement.

                                    (b)   Notwithstanding   the   provisions  of
Section 201(a),  from and after the Release Date and so long as any Senior Notes
Due 2006 are Outstanding,  the Company may issue,  assume, or guarantee Debt, or
permit to exist Debt, secured by
                                        5
<PAGE>
mortgages which would otherwise be subject to the restrictions of Section 201(a)
up to an aggregate  principal amount that, together with the principal amount of
all other  Debt of the  Company  secured  by  mortgages  (other  than  mortgages
permitted by Section  201(a) that would  otherwise  be subject to the  foregoing
restrictions) and the Value of all Sale and Lease-Back Transactions in existence
at such time (other than any Sale and Lease-Back  Transaction that, if such Sale
and  Lease-Back  Transaction  had been a mortgage,  would have been permitted by
Section 201(a), other than Sale and Lease-Back Transactions permitted by Section
202 because the  commitment  by or on behalf of the  purchaser  was  obtained no
later than  eighteen  (18) months after the later of events  described in (i) or
(ii) of Section 202, and other than Sale and Lease-Back Transactions as to which
application  of amounts have been made in accordance  with clause (z) of Section
202),  does not at the time  exceed  the  greater  of ten  percent  (10%) of Net
Tangible Assets or ten percent (10%) of Capitalization.

                                    (c) If at any time the Company  shall issue,
assume,  or guarantee  any Debt  secured by any  mortgage and if Section  201(a)
requires  that the  Outstanding  Senior  Notes Due 2006 be secured  equally  and
ratably with such Debt, the Company will promptly execute,  at its expense,  any
instruments  necessary to so equally and ratably secure the  Outstanding  Senior
Notes Due 2006 and deliver the same to the Trustee along with:

                           (1)      An  Officers'  Certificate  stating that the
                                    covenant of the Company contained in Section
                                    201(a) has been complied with; and

                           (2)      An Opinion of Counsel to the effect that the
                                    Company  has  complied   with  the  covenant
                                    contained  in Section  201(a),  and that any
                                    instrument  executed  by the  Company in the
                                    performance  of such covenant  complies with
                                    the requirements of such covenant.

                  In  the  event  that  the  Company  shall   hereafter   secure
Outstanding  Senior Notes Due 2006 equally and ratably with any other obligation
or  indebtedness  (including  other Notes)  pursuant to the  provisions  of this
Section  201,  the Trustee is hereby  authorized  to enter into an  indenture or
agreement supplemental hereto and to take such action, if any, as it may, in its
sole and absolute discretion, deem advisable to enable it to enforce effectively
the  rights of the  Holders of  Outstanding  Senior  Notes Due 2006 so  secured,
equally and ratably with such other obligation or indebtedness.

         SECTION 202.  From and after the Release Date and so long as any Senior
Notes Due 2006 are  outstanding,  the  Company  will not enter into any Sale and
Lease-Back  Transaction  with  respect to any  Operating  Property  and will not
permit to remain in effect any Sale and Lease-Back  Transaction  entered into on
or prior to the Release Date with respect to any  Operating  Property if, in any
case,  the  commitment  by or on behalf of the purchaser is or was obtained more
than  eighteen  (18)  months  after  the  later  of (i)  the  completion  of the
acquisition, construction, or development of such Operating Property or (ii) the
placing in
                                        6
<PAGE>
operation  of  such  Operating   Property  or  of  such  Operating  Property  as
constructed,  developed, or substantially repaired, altered, or improved, unless
(x) the Company would be entitled  pursuant to Section 201(a) to issue,  assume,
or  guarantee  Debt  secured by a mortgage on such  Operating  Property  without
equally and ratably  securing the Senior Notes Due 2006 or (y) the Company would
be entitled  pursuant to Section  201(b),  after giving  effect to such Sale and
Lease-Back  Transaction,  to incur $1.00 of additional Debt secured by mortgages
(other than  mortgages  permitted  by Section  201(a)) or (z) the Company  shall
apply or cause to be  applied,  in the case of a sale or transfer  for cash,  an
amount  equal to the net  proceeds  thereof  (but not in  excess of the net book
value of such  Operating  Property at the date of such sale or transfer) and, in
the case of a sale or transfer  otherwise  than for cash, an amount equal to the
fair value (as  determined by the Board of Directors) of the Operating  Property
so leased,  to the  retirement,  within one hundred  eighty (180) days after the
later to occur of the effective date of such Sale and Lease-Back  Transaction or
the Release  Date, of Notes or other Debt of the Company  ranking  senior to, or
equally  with,  the  Senior  Notes Due 2006;  provided,  however,  that any such
retirement of Notes shall be in accordance  with the terms and provisions of the
Indenture  and the Notes;  provided,  further,  that the amount to be applied to
such  retirement  of Notes or other Debt shall be reduced by an amount  equal to
the sum of (a) an amount  equal to the  redemption  price with  respect to Notes
delivered  within such one hundred  eighty  (180)-day  period to the Trustee for
retirement and  cancellation and (b) the principal  amount,  plus any premium or
fee paid in connection with any redemption in accordance with the terms of other
Debt voluntarily retired by the Company within such one hundred eighty (180)-day
period, excluding in each case retirements pursuant to mandatory sinking fund or
prepayment provisions and payments at maturity.

         SECTION 203. Definitions

         For purposes of Section 201 and Section 202 of this First  Supplemental
Indenture, the following terms shall have the following meanings:

         "Capitalization"  means the total of all the following  items appearing
on,  or  included  in,  the  consolidated  balance  sheet  of the  Company:  (i)
liabilities for indebtedness maturing more than twelve (12) months from the date
of  determination;  and (ii) common stock,  preferred stock,  premium on capital
stock,  capital surplus,  capital in excess of par value, and retained  earnings
(however the  foregoing  may be  designated),  less, to the extent not otherwise
deducted,  the  cost of  shares  of  capital  stock of the  Company  held in its
treasury.

         Subject  to  the  foregoing,  Capitalization  shall  be  determined  in
accordance  with  generally   accepted   accounting   principles  and  practices
applicable  to the type of business in which the Company is engaged and that are
approved by independent  accountants  regularly retained by the Company, and may
be  determined as of a date not more than (sixty) 60 days prior to the happening
of an event for which such determination is being made.
                                        7
<PAGE>
         The term "Debt" means any outstanding debt for money borrowed evidenced
by notes, debentures, bonds, or other securities.

         The term "Net  Tangible  Assets" means the amount shown as total assets
on the  consolidated  balance  sheet of the  Company,  less the  following:  (i)
intangible assets  including,  but without  limitation,  such items as goodwill,
trademarks,  trade names, patents, and unamortized debt discount and expense and
other  regulatory  assets  carried  as an  asset on the  Company's  consolidated
balance sheet; and (ii) appropriate adjustments,  if any, on account of minority
interests.

         Net Tangible  Assets shall be determined in accordance  with  generally
accepted accounting  principles and practices applicable to the type of business
in which  the  Company  is  engaged  and that are  approved  by the  independent
accountants  regularly  retained by the Company,  and may be  determined as of a
date not more than (sixty) 60 days prior to the happening of the event for which
such determination is being made.

         The term  "Operating  Property" means (i) any interest in real property
owned by the Company and (ii) any asset owned by the Company that is depreciable
in accordance with generally accepted accounting principles.

         The term "Sale and Lease-Back  Transaction"  means any arrangement with
any person  providing for the leasing to the Company of any  Operating  Property
(except for temporary leases for a term,  including any renewal thereof,  of not
more than forty-eight (48) months),  which Operating  Property has been or is to
be sold or transferred by the Company to such person.

         The  term  "Value"  means,  with  respect  to  a  Sale  and  Lease-Back
Transaction,  as of any particular  time, the amount equal to the greater of (1)
the net proceeds to the Company from the sale or transfer of the property leased
pursuant to such Sale and  Lease-Back  Transaction  or (2) the net book value of
such property,  as determined in accordance with generally  accepted  accounting
principles by the Company at the time of entering into such Sale and  Lease-Back
Transaction,  in either case  multiplied  by a fraction,  the numerator of which
shall be equal to the number of full years of the term of the lease that is part
of such Sale and Lease-Back  Transaction  remaining at the time of determination
and the  denominator of which shall be equal to the number of full years of such
term, without regard, in any case, to any renewal or extension options contained
in such lease.

                                  ARTICLE THREE

                          FORM OF SENIOR NOTE DUE 2006

         SECTION 301. The Senior Notes Due 2006 and the Trustee's certificate of
authentication to be endorsed are to be substantially in the following forms:
                                        8
<PAGE>
Form of Face of Note.

UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN  AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY  TRUST COMPANY,  A NEW YORK  CORPORATION  ("DTC"),  TO ARIZONA PUBLIC
SERVICE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT,
AND ANY  CERTIFICATE  ISSUED IS  REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH
OTHER  NAME AS IS  REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY
PAYMENT  IS MADE TO CEDE & CO. OR TO SUCH  OTHER  ENTITY AS IS  REQUESTED  BY AN
AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR
VALUE OR  OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  INASMUCH AS THE  REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.



                         ARIZONA PUBLIC SERVICE COMPANY

                          6-3/4% Senior Notes Due 2006



No. _____                                                           $100,000,000
                                                               CUSIP No.________


      Arizona Public Service Company,  a corporation duly organized and existing
under the laws of Arizona (herein called the "Company",  which term includes any
successor  Person  under  the  Indenture  hereinafter  referred  to),  for value
received,  hereby  promises to pay to Cede & Co.,  or  registered  assigns,  the
principal sum of One Hundred  Million  Dollars on November 15, 2006,  and to pay
interest thereon from November 15, 1996 or from the most recent Interest Payment
Date  with  respect  to which  interest  has  been  paid or duly  provided  for,
semi-annually  on May 15 and November 15 in each year,  commencing May 15, 1997,
at the rate of 6-3/4%  per  annum,  until the  principal  hereof is paid or made
available for payment,  provided  that any  principal and premium,  and any such
instalment  of  interest,  which is overdue  shall bear  interest at the rate of
6-3/4%  per annum (to the extent  that the  payment  of such  interest  shall be
legally enforceable), from the dates such amounts are due until they are paid or
made available for payment,  and such interest  shall be payable on demand.  The
interest so payable,  and punctually  paid or duly provided for, on any Interest
Payment Date will, as provided in such Indenture, be paid to the Person in whose
name this Note (or one or more Predecessor  Notes) is registered at the close of
business on the Regular Record Date for such interest,  which shall be the May 1
or  November  1  (whether  or not a  Business  Day),  as the case  may be,  next
preceding such Interest  Payment Date. Any such interest not so punctually  paid
or duly  provided for will  forthwith  cease to be payable to the Holder on such
Regular Record Date and may either be paid
                                        9
<PAGE>
to the  Person in whose  name this  Note (or one or more  Predecessor  Notes) is
registered at the close of business on a Special  Record Date for the payment of
such  Defaulted  Interest to be fixed by the Trustee,  notice  whereof  shall be
given to  Holders  of Notes of this  series  not less than 10 days prior to such
Special  Record  Date,  or be paid at any time in any other  lawful  manner  not
inconsistent with the requirements of any securities exchange on which the Notes
of this  series may be listed,  and upon such  notice as may be required by such
exchange, all as more fully provided in said Indenture.

      Payment of the  principal of (and  premium,  if any) and such  interest on
this Note will be made at the  office or agency of the  Company  maintained  for
that  purpose in The City of New York,  in such coin or  currency  of the United
States of  America as at the time of  payment  is legal  tender  for  payment of
public and private debts;  provided,  however, that at the option of the Company
payment of  interest  may be made by check  mailed to the  address of the Person
entitled thereto as such address shall appear in the Note Register.

      Reference is hereby made to the further  provisions of this Note set forth
below,  which further  provisions shall for all purposes have the same effect as
if set forth at this place.

      Unless the certificate of  authentication  hereon has been executed by the
Trustee referred to on the reverse hereof by manual  signature,  this Note shall
not be entitled to any benefit under the Indenture or be valid or obligatory for
any purpose.

      IN WITNESS  WHEREOF,  the Company has caused  this  instrument  to be duly
executed under its corporate seal.

                                                  ARIZONA PUBLIC SERVICE COMPANY


                                         By_____________________________________




Attest:

__________________________________


Form of Reverse of Note.

      This Note is one of a duly  authorized  issue of securities of the Company
(herein called the "Notes"), issued and to be issued in one or more series under
an  Indenture,  dated as of November  15, 1996 (herein  called the  "Indenture",
which term shall have the meaning  assigned to it in such  instrument),  between
the Company and The Bank of New York, as Trustee (herein
                                       10
<PAGE>
called the  "Trustee",  which term  includes  any  successor  trustee  under the
Indenture), and reference is hereby made to the Indenture for a statement of the
respective rights,  limitations of rights,  duties and immunities  thereunder of
the  Company,  the  Trustee  and the  Holders of the Notes and of the terms upon
which the Notes are, and are to be,  authenticated  and delivered.  This Note is
one of the series designated on the face hereof,  limited in aggregate principal
amount to $100,000,000.

      Prior to the  Release  Date (as  hereinafter  defined),  this Note will be
secured by First Mortgage Bonds, Senior Note Series A (the "Senior Note Series A
Bonds")  delivered  by the Company to the Trustee for the benefit of the Holders
of the series of Notes of which this Note is a part,  issued  under the Mortgage
and Deed of Trust, dated as of July 1, 1946, from the Company to The Bank of New
York, as successor trustee (the "Mortgage Trustee"), as supplemented and amended
(the  "First  Mortgage").  Reference  is  made  to  the  First  Mortgage  for  a
description  of property  mortgaged  and  pledged,  the nature and extent of the
security,  the rights of the holders of the first mortgage bonds under the First
Mortgage  and of the  Mortgage  Trustee  in  respect  thereof,  the  duties  and
immunities of the Mortgage  Trustee and the terms and conditions  upon which the
Senior  Note  Series A Bonds  are  secured  and the  circumstances  under  which
additional first mortgage bonds may be issued.

      FROM AND AFTER SUCH TIME AS ALL FIRST  MORTGAGE  BONDS  (OTHER THAN SENIOR
NOTE FIRST MORTGAGE  BONDS,  AS SUCH TERM IS DEFINED IN THE INDENTURE) HAVE BEEN
RETIRED  THROUGH  PAYMENT,  REDEMPTION  OR  OTHERWISE  AT,  BEFORE  OR AFTER THE
MATURITY  THEREOF (THE "RELEASE  DATE"),  THE SENIOR NOTE FIRST  MORTGAGE  BONDS
SHALL CEASE TO SECURE THE NOTES IN ANY MANNER.

      The Notes of this series are subject to  redemption  upon not less than 30
days' notice by mail at any time at the option of the Company,  in whole or from
time  to  time  in  part,  at a  redemption  price  equal  to the sum of (i) the
principal  amount of the Notes (or portion  thereof) being redeemed plus accrued
interest  thereon  to the  redemption  date and (ii) the  Make-Whole  Amount (as
defined  below),  if  any,  with  respect  to  the  Notes  being  redeemed  (the
"Redemption Price").

      If notice has been given as  provided in the  Indenture  and funds for the
redemption of any Notes (or any portion  thereof)  called for  redemption  shall
have been made available on the redemption date referred to in such notice, such
Notes (or any portion thereof) will cease to bear interest on the date fixed for
such  redemption  specified  in such notice and the only right of the Holders of
such Notes will be to receive payment of the Redemption Price.

      Notice of any optional  redemption of Notes of this series (or any portion
thereof) will be given to Holders at their  addresses,  as shown in the security
register  for such Notes,  not more than 60 nor less than 30 days prior,  to the
date fixed for redemption.  The notice of redemption  will specify,  among other
items,  the Redemption  Price and the principal amount of the Notes held by such
Holder to be redeemed. If less than all of the Notes are to be redeemed at the
                                       11
<PAGE>
option of the Company, the Trustee shall select, in such manner as it shall deem
fair and  appropriate,  the  portion of such Note to be  redeemed in whole or in
part.

      As used herein:

         "Make-Whole  Amount" means, in connection with any optional  redemption
      of any Notes, the excess, if any, of (i) the aggregate present value as of
      the date of such redemption of each dollar of principal being redeemed and
      the  amount of  interest  (exclusive  of  interest  accrued to the date of
      redemption) that would have been payable in respect of each such dollar if
      such  redemption  had not  been  made,  determined  by  discounting,  on a
      semi-annual  basis,  such principal and interest at the Reinvestment  Rate
      (determined  on the third  Business Day  preceding the date such notice of
      redemption is given) from the respective dates on which such principal and
      interest  would have been  payable if such  redemption  had not been made,
      over (ii) the aggregate principal amount of the Notes being redeemed.

         "Reinvestment  Rate" means 0.10% plus the arithmetic mean of the yields
      under the  respective  heading "Week Ending"  published in the most recent
      Statistical  Release under the caption "Treasury Constant  Maturities" for
      the maturity (rounded to the nearest month) corresponding to the remaining
      life to maturity as of the payment date of the principal  being  redeemed.
      If no maturity  exactly  corresponds to such maturity,  yields for the two
      published maturities most closely  corresponding to such maturity shall be
      calculated  pursuant  to  the  immediately   preceding  sentence  and  the
      Reinvestment  Rate shall be interpolated or extrapolated  from such yields
      on a straight-line  basis rounding in each of such relevant periods to the
      nearest month. For the purpose of calculating the  Reinvestment  Rate, the
      most  recent   Statistical   Release   published  prior  to  the  date  of
      determination of the Make-Whole Amount shall be used.

         "Statistical   Release"   means  the   statistical   release   designed
      "H.15(519)" or any successor  publication which is published weekly by the
      Federal  Reserve System and which  establishes  yields on actively  traded
      United States government  securities adjusted to constant maturities,  or,
      if  such  statistical  release  is  not  published  at  the  time  of  any
      determination under the Indenture,  then such other reasonably  comparable
      index which shall be designated by the Company.

      The Notes of this series will not be subject to any sinking fund.

      In the event of  redemption of this Note in part only, a new Note or Notes
of this  series  and of like tenor for the  unredeemed  portion  hereof  will be
issued in the name of the Holder hereof upon the cancellation hereof.

      The Indenture contains provisions for defeasance at any time of the entire
indebtedness of this Note or certain restrictive covenants and Events of Default
with respect to this Note, in each case upon compliance with certain  conditions
set forth in the Indenture.
                                       12
<PAGE>
      If an Event of Default  with  respect to Notes of this series  shall occur
and be continuing, the principal of the Notes of this series may be declared due
and payable in the manner and with the effect provided in the Indenture.

      If an Event of Default  with  respect to Notes of this series  shall occur
and be continuing, the principal of the Notes may be declared due and payable in
the  manner  and with the  effect  provided  in the  Indenture  and,  upon  such
declaration, the Trustee can demand the acceleration of the payment of principal
of the Senior Note Series A Bonds as provided in the Indenture.

      The Indenture permits,  with certain  exceptions as therein provided,  the
amendment  thereof and the  modification  of the rights and  obligations  of the
Company and the rights of the Holders of the Notes of each series to be affected
under the  Indenture at any time by the Company and the Trustee with the consent
of the  Holders  of a  majority  in  principal  amount  of the Notes at the time
Outstanding  of  each  series  to  be  affected.  The  Indenture  also  contains
provisions  permitting the Holders of specified  percentages in principal amount
of the Notes of each series at the time Outstanding, on behalf of the Holders of
all Notes of such  series,  to waive  compliance  by the  Company  with  certain
provisions of the  Indenture  and certain past defaults  under the Indenture and
their consequences.  Any such consent or waiver by the Holder of this Note shall
be conclusive  and binding upon such Holder and upon all future  Holders of this
Note and of any Note  issued  upon the  registration  of  transfer  hereof or in
exchange therefor or in lieu hereof,  whether or not notation of such consent or
waiver is made upon this Note.

      As provided in and subject to the provisions of the Indenture,  the Holder
of this Note shall not have the right to institute any  proceeding  with respect
to the  Indenture  or for the  appointment  of a receiver  or trustee or for any
other  remedy  thereunder,  unless such Holder shall have  previously  given the
Trustee  written  notice of a  continuing  Event of Default  with respect to the
Notes of this series,  the Holders of not less than 25% in  principal  amount of
the Notes of this series at the time Outstanding shall have made written request
to the Trustee to institute  proceedings  in respect of such Event of Default as
Trustee and offered the Trustee reasonable indemnity,  and the Trustee shall not
have  received  from the Holders of a majority in  principal  amount of Notes of
this series at the time Outstanding a direction  inconsistent with such request,
and shall  have  failed to  institute  any such  proceeding,  for 60 days  after
receipt of such notice, request and offer of indemnity.  The foregoing shall not
apply to any suit  instituted by the Holder of this Note for the  enforcement of
any payment of  principal  hereof or any premium or interest  hereon on or after
the respective due dates expressed herein.

      No reference  herein to the  Indenture and no provision of this Note or of
the  Indenture  shall alter or impair the  obligation  of the Company,  which is
absolute and unconditional, to pay the principal of and any premium and interest
on this Note at the times,  place and rate, and in the coin or currency,  herein
prescribed.

      As provided in the  Indenture and subject to certain  limitations  therein
set forth,  the transfer of this Note is registrable in the Note Register,  upon
surrender of this Note for  registration  of transfer at the office or agency of
the Company in any place where the principal of and any
                                       13
<PAGE>
premium and interest on this Note are payable,  duly endorsed by, or accompanied
by a written  instrument of transfer in form satisfactory to the Company and the
Note  Registrar  duly  executed  by,  the  Holder  hereof or his  attorney  duly
authorized in writing, and thereupon one or more new Notes of this series and of
like tenor,  of authorized  denominations  and for the same aggregate  principal
amount, will be issued to the designated transferee or transferees.

      The Notes of this series are  issuable  only in  registered  form  without
coupons  in  denominations  of $1,000  and any  integral  multiple  thereof.  As
provided in the Indenture and subject to certain  limitations therein set forth,
Notes of this series are exchangeable  for a like aggregate  principal amount of
Notes of this series and of like tenor of a different  authorized  denomination,
as requested by the Holder surrendering the same.

      No service charge shall be made for any such  registration  of transfer or
exchange,  but the Company may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

      Prior to due presentment of this Note for  registration  of transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose  name  this  Note is  registered  as the  owner  hereof  for all
purposes,  whether or not this Note be overdue,  and neither  the  Company,  the
Trustee nor any such agent shall be affected by notice to the contrary.

      All terms used in this Note which are defined in the Indenture  shall have
the meanings assigned to them in the Indenture.

Form of Trustee's Certificate of Authentication.

                        CERTIFICATION OF AUTHENTICATION

   This is one of the Notes of the series designated  therein referred to in the
within-mentioned Indenture.

Dated:                                                     THE BANK OF NEW YORK,
                                                                      As Trustee


                                                By______________________________
                                                            Authorized Signatory

                                  ARTICLE FOUR

                     ORIGINAL ISSUE OF SENIOR NOTES DUE 2006

         SECTION 401. Senior Notes Due 2006 in the aggregate principal amount of
$100,000,000,  may, upon execution of this First Supplemental Indenture, or from
time to time thereafter, be executed by the Company and delivered to the Trustee
for  authentication,  and the Trustee shall thereupon  authenticate  and deliver
said Notes to or upon the written order of the Company,
                                       14
<PAGE>
signed by its Chairman,  its President,  or any Vice President and its Treasurer
or an Assistant Treasurer, without any further action by the Company.

                                  ARTICLE FIVE

                           PAYING AGENT AND REGISTRAR

         SECTION  501.  The Bank of New York will be the  Paying  Agent and Note
Registrar for the Senior Notes Due 2006.

                                   ARTICLE SIX

                                SUNDRY PROVISIONS

         SECTION  601.  Except as  otherwise  expressly  provided  in this First
Supplemental  Indenture  or in the form of Senior  Notes  Due 2006 or  otherwise
clearly  required by the context hereof or thereof,  all terms used herein or in
said form of Senior Notes Due 2006 that are defined in the Indenture  shall have
the several meanings respectively assigned to them thereby.

         SECTION 602. The Indenture,  as supplemented by this First Supplemental
Indenture,  is in all  respects  and  confirmed,  and  this  First  Supplemental
Indenture  shall be deemed part of the Indenture in the manner and to the extent
herein and therein provided.

         SECTION 603. The Trustee  hereby  accepts the trusts  herein  declared,
provided, created,  supplemented, or amended and agrees to perform the same upon
the terms and conditions herein and in the Indenture, as heretofore supplemented
and amended, set forth and upon the following terms and conditions:

         The Trustee shall not be responsible in any manner whatsoever for or in
respect of the validity or sufficiency of this First  Supplemental  Indenture or
for or in respect of the recitals  contained  herein,  all of which recitals are
made by the  Company  solely.  In  general,  each and every  term and  condition
contained in Article Seven of the Indenture shall apply to and form part of this
First Supplemental  Indenture with the same force and effect as if the same were
herein set forth in full with such omissions,  variations,  and  insertions,  if
any, as may be  appropriate  to make the same conform to the  provisions of this
First Supplemental Indenture.

                        --------------------------------

         This instrument may be executed in any number of counterparts,  each of
which so executed shall be deemed to be an original,  but all such  counterparts
shall together constitute but one and the same instrument.
                                       15
<PAGE>
         IN  WITNESS  WHEREOF,   the  parties  hereto  have  caused  this  First
Supplemental Indenture to be duly executed, and their respective corporate seals
to be  hereunto  affixed  and  attested,  all as of the day and year first above
written.


                                                ARIZONA PUBLIC SERVICE COMPANY



                                                By:  Nancy E. Newquist
                                                  ----------------------------
                                                      Nancy E. Newquist
                                                      Treasurer


Attest:


Betsy A. Pregulman
- ----------------------
Associate Secretary



                                                THE BANK OF NEW YORK, as Trustee



                                                By:  Walter N. Gitlin
                                                  ----------------------------
                                                     Vice President


Attest:



Robert E. Patterson
- ------------------------
Assistant Vice President
                                       16
<PAGE>
STATE OF ARIZONA                   )
                                   ) ss:
COUNTY OF MARICOPA                 )

         On the 21st day of November, 1996, before me personally  came  Nancy E.
Newquist,  to me know, who, being by me duly sworn,  did depose and say that she
is the Treasurer of Arizona  Public  Service  Company,  one of the  corporations
described in and which  executed the  foregoing  instrument;  that she knows the
seal of said  corporation;  that the seal  affixed  to said  instrument  is such
corporate seal; that it was so affixed by authority of the Board of Directors of
said corporation; and that she signed her name thereto by like authority.


                                                           Maria R. Marrs
                                                        ---------------------
                                                            NOTARY PUBLIC

My Commission Expires:  July 21, 1998






STATE OF NEW YORK        )
                         ) ss:
COUNTY OF NEW YORK       )

         On the 20th day of November,  1996, before me personally came Walter N.
Gitlin,  to me know, who, being by me duly sworn,  did depose and say that he is
the Vice President of The Bank of New York, one of the corporations described in
and which  executed  the  foregoing  instrument;  that he knows the seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that he signed his name thereto by like authority.



                                                       William J. Cassels
                                                     ----------------------
                                                         NOTARY PUBLIC


My Commission Expires:

May 16, 1998
- ----------------------                 17

                                  Exhibit 4.7

UNLESS THIS  CERTIFICATE  IS PRESENTED BY AN  AUTHORIZED  REPRESENTATIVE  OF THE
DEPOSITORY  TRUST COMPANY,  A NEW YORK  CORPORATION  ("DTC"),  TO ARIZONA PUBLIC
SERVICE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT,
AND ANY  CERTIFICATE  ISSUED IS  REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH
OTHER  NAME AS IS  REQUESTED  BY AN  AUTHORIZED  REPRESENTATIVE  OF DTC (AND ANY
PAYMENT  IS MADE TO CEDE & CO. OR TO SUCH  OTHER  ENTITY AS IS  REQUESTED  BY AN
AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR
VALUE OR  OTHERWISE BY OR TO ANY PERSON IS WRONGFUL  INASMUCH AS THE  REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.


                         ARIZONA PUBLIC SERVICE COMPANY

                          6-3/4% Senior Notes Due 2006



No. A-1                                                             $100,000,000
                                                             CUSIP No. 040555BX1


      Arizona Public Service Company,  a corporation duly organized and existing
under the laws of Arizona (herein called the "Company",  which term includes any
successor  Person  under  the  Indenture  hereinafter  referred  to),  for value
received,  hereby  promises to pay to Cede & Co.,  or  registered  assigns,  the
principal sum of One Hundred  Million  Dollars on November 15, 2006,  and to pay
interest thereon from November 15, 1996 or from the most recent Interest Payment
Date  with  respect  to which  interest  has  been  paid or duly  provided  for,
semi-annually  on May 15 and November 15 in each year,  commencing May 15, 1997,
at the rate of 6-3/4%  per  annum,  until the  principal  hereof is paid or made
available for payment,  provided  that any  principal and premium,  and any such
instalment  of  interest,  which is overdue  shall bear  interest at the rate of
6-3/4%  per annum (to the extent  that the  payment  of such  interest  shall be
legally enforceable), from the dates such amounts are due until they are paid or
made available for payment,  and such interest  shall be payable on demand.  The
interest so payable,  and punctually  paid or duly provided for, on any Interest
Payment Date will, as provided in such Indenture, be paid to the Person in whose
name this Note (or one or more Predecessor  Notes) is registered at the close of
business on the Regular Record Date for such interest,  which shall be the May 1
or  November  1  (whether  or not a  Business  Day),  as the case  may be,  next
preceding such Interest  Payment Date. Any such interest not so punctually  paid
or duly  provided for will  forthwith  cease to be payable to the Holder on such
Regular Record Date and may either be paid to the Person in whose name this Note
(or one or more  Predecessor  Notes) is registered at the close of business on a
Special  Record Date for the payment of such  Defaulted  Interest to be fixed by
the Trustee,  notice  whereof  shall be given to Holders of Notes of this series
not less than 10 days prior to such Special  Record Date, or be paid at any time
in any  other  lawful  manner  not  inconsistent  with the  requirements  of any
securities  exchange on which the Notes of this  series may be listed,  and upon
such notice as may be required by such  exchange,  all as more fully provided in
said Indenture.

      Payment of the  principal of (and  premium,  if any) and such  interest on
this Note will be made at the  office or agency of the  Company  maintained  for
that  purpose in The City of New York,  in such coin or  currency  of the United
States of America as at the time of payment is legal tender for payment of
<PAGE>
public and private debts;  provided,  however, that at the option of the Company
payment of  interest  may be made by check  mailed to the  address of the Person
entitled thereto as such address shall appear in the Note Register.

      Reference is hereby made to the further  provisions of this Note set forth
below,  which further  provisions shall for all purposes have the same effect as
if set forth at this place.

      Unless the certificate of  authentication  hereon has been executed by the
Trustee referred to on the reverse hereof by manual  signature,  this Note shall
not be entitled to any benefit under the Indenture or be valid or obligatory for
any purpose.
                                        2
<PAGE>
      IN WITNESS  WHEREOF,  the Company has caused  this  instrument  to be duly
executed under its corporate seal.

                                                  ARIZONA PUBLIC SERVICE COMPANY


                                         By_____________________________________


Attest:

______________________________________
                                        3
<PAGE>
      This Note is one of a duly  authorized  issue of securities of the Company
(herein called the "Notes"), issued and to be issued in one or more series under
an  Indenture,  dated as of November  15, 1996 (herein  called the  "Indenture",
which term shall have the meaning  assigned to it in such  instrument),  between
the Company and The Bank of New York, as Trustee  (herein  called the "Trustee",
which term includes any successor trustee under the Indenture), and reference is
hereby  made  to  the  Indenture  for a  statement  of  the  respective  rights,
limitations  of rights,  duties and  immunities  thereunder of the Company,  the
Trustee  and the Holders of the Notes and of the terms upon which the Notes are,
and are to be,  authenticated  and  delivered.  This  Note is one of the  series
designated  on the  face  hereof,  limited  in  aggregate  principal  amount  to
$100,000,000.

      Prior to the  Release  Date (as  hereinafter  defined),  this Note will be
secured by First Mortgage Bonds, Senior Note Series A (the "Senior Note Series A
Bonds")  delivered  by the Company to the Trustee for the benefit of the Holders
of the series of Notes of which this Note is a part,  issued  under the Mortgage
and Deed of Trust, dated as of July 1, 1946, from the Company to The Bank of New
York, as successor trustee (the "Mortgage Trustee"), as supplemented and amended
(the  "First  Mortgage").  Reference  is  made  to  the  First  Mortgage  for  a
description  of property  mortgaged  and  pledged,  the nature and extent of the
security,  the rights of the holders of the first mortgage bonds under the First
Mortgage  and of the  Mortgage  Trustee  in  respect  thereof,  the  duties  and
immunities of the Mortgage  Trustee and the terms and conditions  upon which the
Senior  Note  Series A Bonds  are  secured  and the  circumstances  under  which
additional first mortgage bonds may be issued.

      FROM AND AFTER SUCH TIME AS ALL FIRST  MORTGAGE  BONDS  (OTHER THAN SENIOR
NOTE FIRST MORTGAGE  BONDS,  AS SUCH TERM IS DEFINED IN THE INDENTURE) HAVE BEEN
RETIRED  THROUGH  PAYMENT,  REDEMPTION  OR  OTHERWISE  AT,  BEFORE  OR AFTER THE
MATURITY  THEREOF (THE "RELEASE  DATE"),  THE SENIOR NOTE FIRST  MORTGAGE  BONDS
SHALL CEASE TO SECURE THE NOTES IN ANY MANNER.

      The Notes of this series are subject to  redemption  upon not less than 30
days' notice by mail at any time at the option of the Company,  in whole or from
time  to  time  in  part,  at a  redemption  price  equal  to the sum of (i) the
principal  amount of the Notes (or portion  thereof) being redeemed plus accrued
interest  thereon  to the  redemption  date and (ii) the  Make-Whole  Amount (as
defined  below),  if  any,  with  respect  to  the  Notes  being  redeemed  (the
"Redemption Price").

      If notice has been given as  provided in the  Indenture  and funds for the
redemption of any Notes (or any portion  thereof)  called for  redemption  shall
have been made available on the redemption date referred to in such notice, such
Notes (or any portion thereof) will cease to bear interest on the date fixed for
such  redemption  specified  in such notice and the only right of the Holders of
such Notes will be to receive payment of the Redemption Price.


      Notice of any optional  redemption of Notes of this series (or any portion
thereof) will be given to Holders at their  addresses,  as shown in the security
register  for such Notes,  not more than 60 nor less than 30 days prior,  to the
date fixed for redemption.  The notice of redemption  will specify,  among other
items,  the Redemption  Price and the principal amount of the Notes held by such
Holder to be  redeemed.  If less than all of the Notes are to be redeemed at the
option of the Company, the Trustee shall select, in such manner as it shall deem
fair and  appropriate,  the  portion of such Note to be  redeemed in whole or in
part.
                                        4
<PAGE>
      As used herein:

         "Make-Whole  Amount" means, in connection with any optional  redemption
      of any Notes, the excess, if any, of (i) the aggregate present value as of
      the date of such redemption of each dollar of principal being redeemed and
      the  amount of  interest  (exclusive  of  interest  accrued to the date of
      redemption) that would have been payable in respect of each such dollar if
      such  redemption  had not  been  made,  determined  by  discounting,  on a
      semi-annual  basis,  such principal and interest at the Reinvestment  Rate
      (determined  on the third  Business Day  preceding the date such notice of
      redemption is given) from the respective dates on which such principal and
      interest  would have been  payable if such  redemption  had not been made,
      over (ii) the aggregate principal amount of the Notes being redeemed.

         "Reinvestment  Rate" means 0.10% plus the arithmetic mean of the yields
      under the  respective  heading "Week Ending"  published in the most recent
      Statistical  Release under the caption "Treasury Constant  Maturities" for
      the maturity (rounded to the nearest month) corresponding to the remaining
      life to maturity as of the payment date of the principal  being  redeemed.
      If no maturity  exactly  corresponds to such maturity,  yields for the two
      published maturities most closely  corresponding to such maturity shall be
      calculated  pursuant  to  the  immediately   preceding  sentence  and  the
      Reinvestment  Rate shall be interpolated or extrapolated  from such yields
      on a straight-line  basis rounding in each of such relevant periods to the
      nearest month. For the purpose of calculating the  Reinvestment  Rate, the
      most  recent   Statistical   Release   published  prior  to  the  date  of
      determination of the Make-Whole Amount shall be used.

         "Statistical   Release"   means  the   statistical   release   designed
      "H.15(519)" or any successor  publication which is published weekly by the
      Federal  Reserve System and which  establishes  yields on actively  traded
      United States government  securities adjusted to constant maturities,  or,
      if  such  statistical  release  is  not  published  at  the  time  of  any
      determination under the Indenture,  then such other reasonably  comparable
      index which shall be designated by the Company.

      The Notes of this series will not be subject to any sinking fund.

      In the event of  redemption of this Note in part only, a new Note or Notes
of this  series  and of like tenor for the  unredeemed  portion  hereof  will be
issued in the name of the Holder hereof upon the cancellation hereof.

      The Indenture contains provisions for defeasance at any time of the entire
indebtedness of this Note or certain restrictive covenants and Events of Default
with respect to this Note, in each case upon compliance with certain  conditions
set forth in the Indenture.

      If an Event of Default  with  respect to Notes of this series  shall occur
and be continuing, the principal of the Notes of this series may be declared due
and payable in the manner and with the effect provided in the Indenture.

      If an Event of Default  with  respect to Notes of this series  shall occur
and be continuing, the principal of the Notes may be declared due and payable in
the  manner  and with the  effect  provided  in the  Indenture  and,  upon  such
declaration, the Trustee can demand the acceleration of the payment of principal
of the Senior Note Series A Bonds as provided in the Indenture.
                                        5
<PAGE>
      The Indenture permits,  with certain  exceptions as therein provided,  the
amendment  thereof and the  modification  of the rights and  obligations  of the
Company and the rights of the Holders of the Notes of each series to be affected
under the  Indenture at any time by the Company and the Trustee with the consent
of the  Holders  of a  majority  in  principal  amount  of the Notes at the time
Outstanding  of  each  series  to  be  affected.  The  Indenture  also  contains
provisions  permitting the Holders of specified  percentages in principal amount
of the Notes of each series at the time Outstanding, on behalf of the Holders of
all Notes of such  series,  to waive  compliance  by the  Company  with  certain
provisions of the  Indenture  and certain past defaults  under the Indenture and
their consequences.  Any such consent or waiver by the Holder of this Note shall
be conclusive  and binding upon such Holder and upon all future  Holders of this
Note and of any Note  issued  upon the  registration  of  transfer  hereof or in
exchange therefor or in lieu hereof,  whether or not notation of such consent or
waiver is made upon this Note.

      As provided in and subject to the provisions of the Indenture,  the Holder
of this Note shall not have the right to institute any  proceeding  with respect
to the  Indenture  or for the  appointment  of a receiver  or trustee or for any
other  remedy  thereunder,  unless such Holder shall have  previously  given the
Trustee  written  notice of a  continuing  Event of Default  with respect to the
Notes of this series,  the Holders of not less than 25% in  principal  amount of
the Notes of this series at the time Outstanding shall have made written request
to the Trustee to institute  proceedings  in respect of such Event of Default as
Trustee and offered the Trustee reasonable indemnity,  and the Trustee shall not
have  received  from the Holders of a majority in  principal  amount of Notes of
this series at the time Outstanding a direction  inconsistent with such request,
and shall  have  failed to  institute  any such  proceeding,  for 60 days  after
receipt of such notice, request and offer of indemnity.  The foregoing shall not
apply to any suit  instituted by the Holder of this Note for the  enforcement of
any payment of  principal  hereof or any premium or interest  hereon on or after
the respective due dates expressed herein.

      No reference  herein to the  Indenture and no provision of this Note or of
the  Indenture  shall alter or impair the  obligation  of the Company,  which is
absolute and unconditional, to pay the principal of and any premium and interest
on this Note at the times,  place and rate, and in the coin or currency,  herein
prescribed.

      As provided in the  Indenture and subject to certain  limitations  therein
set forth,  the transfer of this Note is registrable in the Note Register,  upon
surrender of this Note for  registration  of transfer at the office or agency of
the Company in any place where the  principal of and any premium and interest on
this Note are payable,  duly endorsed by, or accompanied by a written instrument
of transfer in form  satisfactory  to the  Company and the Note  Registrar  duly
executed by, the Holder hereof or his attorney duly  authorized in writing,  and
thereupon one or more new Notes of this series and of like tenor,  of authorized
denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.

      The Notes of this series are  issuable  only in  registered  form  without
coupons  in  denominations  of $1,000  and any  integral  multiple  thereof.  As
provided in the Indenture and subject to certain  limitations therein set forth,
Notes of this series are exchangeable  for a like aggregate  principal amount of
Notes of this series and of like tenor of a different  authorized  denomination,
as requested by the Holder surrendering the same.

      No service charge shall be made for any such  registration  of transfer or
exchange,  but the Company may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.
                                        6
<PAGE>
      Prior to due presentment of this Note for  registration  of transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose  name  this  Note is  registered  as the  owner  hereof  for all
purposes,  whether or not this Note be overdue,  and neither  the  Company,  the
Trustee nor any such agent shall be affected by notice to the contrary.

      All terms used in this Note which are defined in the Indenture  shall have
the meanings assigned to them in the Indenture.








                          CERTIFICATE OF AUTHENTICATION


   This is one of the Notes of the series designated  therein referred to in the
within-mentioned Indenture.

Dated:                                                     THE BANK OF NEW YORK,
                                                                      As Trustee


                                                By______________________________
                                                            Authorized Signatory
                                        7


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